Side by Side Comparison of: Lux vs Honeywell

Works well on my HVAC unit with emergency heat. Not all the features of my old thermostat (I wish it would switch from heating to cooling on it's own and would automatically switch to emergency heat if needed) but an affordable and quality item. The wiring for my old thermostat was not the same as any in the instructions. I just took a guess but before turning on I decided to call customer service. I don't think they had experience with the way my other thermostat was wired and they put me on hold for a bit. They confirmed that I had guessed correctly and I was set to go. I liked the fact that while it's physical size was smaller than my old thermostat, there was more room to accommodate the wires, so I could leave some extra wire in the case instead of having to push it all back into the wall.

I purchased this thermostat mainly for a specific feature that my old thermostat didn't have...the temperature swing setting. The old one was locked in at plus or minus 0.5 degrees. This was a problem because I discovered my air conditioner unit was oversized, so this plus the 0.5 degree swing setting was causing my AC unit to have short run times. This caused both inefficient compressor operation and humidity removal. After installing the the new Lux thermostat, I set the swing value to 5 (1.25 degrees), and my run times went from 5 minutes to a minimum of 10. I'm very happy with the results, and the cost was well worth it as I'm using less overall power for the same amount of cooling. Another thing I find very useful on the thermostat is the energy usage feature...It keeps track of the time the unit is on for the current day, previous day and total time since reset. This helps me keep track of my energy usage so I'm not surprised when I get my electric bill. I didn't have any issues installing or programing it. The instructions that came with it plus the ones I downloaded from the web were easy to understand.

I've owned Lux programmable thermostats for over 20 years and have 4 of them in my house currently. The back light stopped working on a 10 year old unit in my bedroom, so i decided to purchase this unit. Installation was extremely easy, uses the same mounting holes, but is considerable smaller than my old unit. This left me with an unpainted portion on my wall, which either needed to be painted or purchase the larger back plate. I choose to paint, which took all of 5 minutes. I read the instructions, downloaded the full user manual which was I read fully. The unit is extremely intuitive and, in the end, was a waste of my time to download and print the entire manual. The only setting that I changed was the recovery delay from 5 minutes to 2 minutes, which is done with a din switch on the back of the unit. Although we have only had this installed a few days now, we like it. The numbers a large enough to read without glasses, bright enough to see until it's dark and touching the unit anywhere lights it up for 10 seconds. Temporarily override and hold functions work the same as the older units, but are much easier to access. Finally, most utility companies are offering $25 back on the purchase of programmable thermostats and $100 back on WiFi enabled units. If this unit last as long as my others have, I'll be extremely pleased.

My thermostat konked out on me and I am a wanna be do it yourself-er widow. So I watched you tube video on how to install a new thermostat. Looked pretty straight forward. So I bought this one, best buy, good price, big numbers for my old eyes, simple to program. So I'm all nervous about installing it. Got the power turned off on the furnace/AC at the circuit breaker. Then got the cover off. OMG those wires and screws are tiny!!!
Got all the wires labeled. (Stickers Provided) Took off the old mounting bracket. Installed the new one. (Sheetrock anchors provided too.) Got the tiny tiny wires and the tiny tiny screws (apparently they are all that way) in the right slots. Put in the batteries, programmed it (simple) snapped it on the mounting bracket. Turned on the power and PRAISE THE LORD it works!!! Girls ROCK!!! I was so jazzed. It really was pretty easy to install, I just was so outside my comfort zone. So ladies this is the one for you!!

Forward:This is more than a review and experiences with the Lux Products TX9600TS. It includes what was important to me when looking for a new thermostat, the short list of the others I researched, and why I chose this model. The reason for replacing my previous thermostat, a Honeywell T87 style mercury type thermostat, was because it would run for a short period of time, stop, then restart again. The T87 worked fine with the forced air furnace we had several years ago, but ever since we upgraded to a 93% condensing furnace, it cycled so frequently that register air didn't have time to warm up adequately. We have a standing joke around here. "We have a furnace that heats with cold air."So why do people have rapid, short cycling problems like this after upgrading from say forced air to high-efficiency condensing furnaces in cold climates? My theory is it might stem from the differences in their their sequence of operation.A. Forced Air furnaces, i.e. 80% and less. 1 Thermostat calls for heat. 2. Burner starts. 3. Circulation fan starts after the air from the heat exchanger reaches 120-140 degrees. 4. Heats house. 5. Thermostat stops giving the call for heat. 6. Burner shuts off. 7. Circulation blower continues to circulate air until the air coming out of the heat exchange cools to 85 to 100 degrees so there is never any cold air exiting the register.B. High Efficiency Condensing Furnaces, i.e. 90% plus. 1. Call for heat. 2. Draft motor starts and pulls in cold air from outside. 3. As soon as furnace detects draft, it starts the hot surface igniter. 4. At the 30 second point, the gas valve opens. Flame detector must see flame within 2-3 seconds. 5. Circulation blower turns on, no matter what temperature the heat exchanger is. 6. Heats house. 7. Call for heat from thermostat ceases. 8. Gas valve is turned off. 9. The draft motor continues to pull in wicked cold air through the heat exchanger for the next 30 seconds, while the circulation blower blows air across the now wicked cold heat exchanger. 10. Thermostat senses the cold air, and starts a new cycle with a call for heat 25 seconds after the circulation fan stops from the previous cycle.Establishing my requirements:As our climate changes and we edge closer to the next ice age, winters have been getting colder, and things were getting a little out of hand this winter, so I decided it was time to get a thermostat with some control. There was no requirement for a programmable thermostat, but my requirements were:1. One I can control the temperature between the cut in and cut out time. That means I have to be able to understand HOW it decides to turn on and off so the I can determine if it meets that requirement.2. Doesn't require a degree in computer mysteries to use.3. Doesn't rely on batteries.4. Sensible price, which to me means less than $100. I had some fun looking at the NEST, Ecobee, and Prestige, but they were never contenders..The Short List:My first problem was to determine which products within the price range didn't require a battery for operation. That eliminated all of the digital, non-programmables. I came up with the following list:Honeywell RTH7500D Conventional 7-Day Programmable Thermostat $59.95Honeywell RTH7600D Touchscreen 7-Day Programmable Thermostat (Touch screen version) $79.95Lux Products TX500U Smart Temp Programmable Thermostat 5-2 Programming $37.97Lux Products TX1500U Smart Temp Programmable Thermostat 5-1-1 Programming $39.97Lux Products TX9600TS Touch Screen 7 Day Programmable 7-Day Programming Thermostat $63.67Researching and Reading the Documentation:I studied the manuals, and called and e-mailed both Honeywell and Lux Products. Both were very responsive, English was their first language, and they were knowledgeable.Contacting Lux:I sent LUX an E-Mail one night with several questions about the 3 different models I was looking at. The following morning I received a call. It was a very good conversation. During the conversation I mentioned how I like the ability to adjust the sensitivity on with what they term as swing. He was quick to point out that the TX500U and TX1500U current versions had removed swing. They have an a and b suffix.on them when you open the package, E.G.TX500Ua, TX1500Ua, and a different manual, even though the packaging and marketing still shows TX500U, TX1500U. He said they decided to retain swing on the TX9600TSa. The TX500Ua and TX1500Ua have something called Duration. If you enter 12 minutes, it will not turn on more than 5 times and hour. It heats up to the recommended temperature and stops, and won't start again until after the 12 minutes expires, and only then when heat is required. The temperature span between start and stop temperatures is fixed. Revision "a' was 1.8 degrees, and the "b" revision was further refined to 1.4 degrees. That would mean the true temperature variation could be more than that between cycles if the furnace was prevented from starting. On LUX models with swing, you put in a number between 1 an 9. Each number is 0.25 degrees F, for a maximum of 2.25 degrees, which I thought wasn't much of a range, until I learned swing doesn't work like I thought. Swing works on both sides of the set point so if you you enter a 2, it does turn on when the temperature dips below 0.5 degrees below the set point, but it also doesn't shut off until the temperature reaches .5 degrees above the set point. Thus to 2.25 maximum swing equates to a 4.5 degree spread between start and stop, which should be enough.Contacting Honeywell:Honeywell doesn't have swing except in the Prestige line which is only available through contractors. The DIY (Do-It-Yourself) models have only Cycles Per Hour, however they generally discourage it. I called Honeywell, and after they explained how it worked, I can understand why they discouraged it. For instance, for a high efficiency condensing furnace the recommend setting to 3 cycles per hour. What that setting does is divide an hour into 20 minute periods, and further divide those in half, with a 10 minute window where the system can be on, followed by a 10 minute window when the system cannot be on. Because of my disbelief, I made multiple calls to confirm this. That is actually quite different from the LUX. The LUX could run the entire hour if it had to, to get to the cut off temperature, and then not allowed to start again until the period expires. The Honeywell CPH sounds more like a unintelligent 50% duty cycle enforcer. I can understand now why so many reviews on the Honeywells mention frequent cycling as a problem, and why they encouraged me to go with the $300-$500 Prestige line to get swing. I also mentioned to Honeywell how they didn't have any temperature calibration ability. I was assured that they are set accurately at the factory, and there would be no problem with the temperature being off. However, the only thermometer that I know of that you can trust over time are the mercury and alcohol ones.Decisions, decisions:I leaned toward the Honeywell. I thought it looked nicer. The Honeywell also has daylight savings time built in, but not the LUX, in fact the Lux only uses day of week and time, not the date, which made me think, Micky Mouse. The other thing I liked was that the Honeywells have the option to auto switch between heating and cooling or manual. The feature doesn't matter to me, but it does indicate well thought out. I tried to rationalize that the Honeywell has been making thermostats for well over 100 years, as has Lux, so I shouldn't have to worry about them having a cycling problem like I had then. However, I had trouble coming to terms with that position when one of the major reoccurring complaints about the Honeywell on the web from people in cold climates, is rapid cycling, which is also why I was shopping for a thermostat in the first place. What I needed was something that stays on long enough to heat the house, which means the only cure was is a broader temperature span between on and off. There is only so much you can do to reconfigure the furnace, and I'd already proven furnace tweaking wasn't enough to fix the problem. The sad truth was the Honeywells didn't have a usable work-around for a frequent cycling problem. That left me with the 3 Lux Product's thermostats on my shortlist. There is only $2 difference between the TX500Ua and the TX1500Ua, so I dropped the TX500Ua from the list. The only difference that mattered to me between the TX1500Ua and TX9600TSa was the TX1500Ua uses Duration technology while the TX9600TSa uses Swing. They both have their advantages. With Duration, the temperature span would be 1.8 degrees for the "a" and 1.4 degrees for the "b". Thus, it is a fixed span, unless it has to wait out a Duration period, at which point the temperature range would drop until the appropriate amount of time has passed, and the thermostat would send a call for heat. However, as with the Honeywell, it would make the problem worse. Instead of doing very short cycles back to back, it would short cycle followed by a long wait. With the TX9600TSa, I set the Swing/Temperature Sensitivity, and it would cycle based on temperature, but there would never have to wait for a wait period to expire. Swing was the only method that can fix a problem like this. I didn't like paying an extra $30 for a touch screen that I didn't want, but the others didn't have the capabilities necessary to cure the problem. The Lux TX9600TS also advertises Battery Free Memory storage.Purchasing the thermostatI paid more money and bought locally because the furnace was cycling constantly and I wanted to fix it now. The TX9600TS packaging had no hint of whether it was a TX9600TS or a TX9600TSa. It did have a little -004 in small print after the model on the bottom of the packaging. Once it cut open the packaging, the instructions clearly stated TX9600TSa. The first thing I did was make sure the instructions said it had had Swing, like the Lux representative said, and they did. Then I was curious what the differences were between the TX9600TS and TX9600TSa. After going down their manuals side by side, the ONLY differences I could found were they made the TX9600TSa much easier for people to unsnap from its base, which is a complaint in the reviews. The only other changes a saw were slight differences in explaining the same features. The manual has the same number of pages, with the same items on each page.Initial setup of the thermostat:I read the instructions carefully. I didn't want to mess with the current thermostat during such cold weather, 10 degrees, until I had a plan. You need two AA batteries if you are going to do "arm chair" programming, so I got a couple of their recommended AA batteries. At first, I thought less of the Lux because of its use of dip switches instead of the soft setup the Honeywell uses. However, with the Honeywell setup, you need to deal with codes from the manual. E.G. You enter 0180 for the Heating Fan Control, and enter a 0 for gas or oil heat, or 1 for electric heat. Another nice feature of the Lux is that you can change a dip switch setting that can turn off all of the schedules, and use it like a regular thermostat, which I fully intended to do, but decided to leave it the default and change it later. The TX9600TS also advertises Battery Free Memory storage. Many give you so many seconds to change the battery, which indicates that you need batteries to maintain your settings during a power failure.Installation:The next thing was to check if I had the wiring necessary, and how things were currently wired. It was quicker to shut off the furnace, pull the cover, and check out the thermostat wiring from there than to disturb and have to re-level the current thermostat. I learned that the house had 4-conductor thermostat wire, which meant I was one wire short to be able to run the thermostat off furnace power, instead of the battery power. Fortunately, it didn't appear the wires were secured inside the wall, and unsecured is standard standard I hear. That meant I could use the old cable to pull a new one. I bought 22 feet of 8-conductor thermostat cable locally, and while there, picked up a 97 cent thermometer that read the same most of the others in the rack. I shut off the furnace switch as well as the furnace and air conditioning breakers. I took pictures of the furnace and thermostat wiring connections. It indeed turned out that pulling a new thermostat wire was far simpler than I had feared. Soon I had the new wire connected to the furnace and thermostat base and rechecked. I read where some people were upset because the touch thermostat would slide on the wall, so I put some thin 3M foam double-sided tape on the back of the base, away from the raised mounting areas, positioned the base with a level to make it look good, slid over to the right so the wiring came through on the left end of the thermostat base opening, and pressed the base against the wall. Having it to one side allowed me to mount a little nylon wire holder to the wall so the wire could never fall into the wall by accident, and the thin double-sided tape held the base in position while I drilled the new mounting holes in the wall. Then I pushed some insulation in around the where the wire where it comes through the hole in the wall, and put tape over the hole around the wire to prevent a draft from between floors from influencing the thermostat. Next I snapped the thermostat to the base, turned on both breakers, turned on the furnace, turned the thermostat to heat, and the furnace started. When you touch the display, it lights for 10 seconds, and you can faintly hear an oscillator while it is on. It surprised me that the display was not as bright as I thought it would be. That is probably good since most people probably just run off the batteries, and at night you wouldn't want it very bright. However, I was expecting the cool factor like I saw in the advertising, but what I received was what was practical.Final setup:I was initially confused during the setup only because I had difficulty accepting that it was that simple. I was thinking I must be missing something. Not so. You press the Menu button and press the on-screen scroll button to scroll though the settings. Then it's just the Next, OK, and Exit on-screen buttons. If you don't want to use the programs, but have them available, it's still easy. Simply press the on-screen Hold button. After that it behaves like a manual thermostat, but you still have all of the features such as Filter Monitoring, time, day-of-the-week, etc. that according to the manual you wouldn't have if you change the dip switch to have it act like a manual thermostat. It also does not lose the Hold setting when you change the temperature. If you want it to run the schedule, pressing Hold again releases it to run the schedule, and the display changes from Hold to Program Mode. When I touch the current temperature on screen, and nothing happens other than the screen lights up. If I touch the set temperature on screen, up and down arrows appear to adjust the temperature. The Fan On-Off fan switch is simple mechanical switch and the the Heat-Off-Cool switch are simple mechanical switches on the right side, just like a manual thermostat. This is what I like because in Spring and Fall, everything is turned off. In the summer after it gets hot, we simply switch it to cool and have the thermostat control the temperature, and turn it off when we don't want it to cycle anymore. Likewise in the late fall after things get quite cold, we turn it to heat for the season. However, for people that live in moderate climates where it might be cold at night, and hot during the day, they would prefer the Honeywell, which can be optionally enabled to automatically switch between Heat and Cool. The Honeywell doesn't not seem to have the problem of short cycling in moderate climates. When I spoke to the Lux representative, who is also from Michigan, I talked about how I planned to set the Swing to 8, so I would have 2 degrees up and 2 degrees down. He said he has the same thermostat, and said 4 turned out to be enough, so I set it to 4, and set the temperature at 62. This means it would kick in if it dipped below 61, and shut off as soon as the temperature exceeded 63.Experiences:1. It worked as expected right away.2. No more short cycling issues, but I was also in for some surprises. Even in 20 degree weather, it takes well over an hour to lose 1 degree of house temperature. That means with even the 2 degree span, the heat would be off for more than 2 1/2 hours. I didn't know how slowly the house lost heat until now. The way it was cycling before, it acted like the windows were open. It also makes sense to me now why Lux tightened the temperature hard-wired 1.8 degree temperature span on the TX500Ua and TX1500Ua to 1.4 degrees on the TX500Ub and TX1500Ub. However, it also makes me very glad that I picked the TX9600TS where I can adjust the span anything I need, down to .5 degrees. (A setting of 1 will cause a call for heat at .25 degrees below the set temperature, and cancel the call for heat .25 degrees above the set temperature.)3. My concern about others in the household being able to understand the thermostat if I left it configured for optional program mode turned out to be unfounded. It was a 1 minute class, and not even the least technical had a problem understand what to do.4. Nobody wanted to run a schedule because they wanted to do it manually. Two days later they were talking about a running schedule.5. On the Honeywells, people complain about the loud click when things happen. I found no complaints about the Lux in that regard, so I didn't know one way or the other. I can report that the sound of the click of the internal relays inside the Lux are very faint. You need to be close by to even hear them.6. Both Lux and Honeywell state they are temperature calibrated at the factory, and you should never have to change anything. However, at least the Lux does has a way to do it if necessary as things change over time, instead of replacing the thermostat. The old thermostat and the thermometer I picked up at the store agreed on the temperature. The Lux read between 4 and 5 degrees high. I simply set the calibration to -5.Summary:For me, I don't believe I could have done better than the TX9600TS. I discovered how useful Swing is. If I lived in a moderate climate, I would have no doubt gone with one of the Honeywells. Might one of the two Honeywells worked for me? I can't know that, but from the complaints around the web, reading the documentation, and talking with Honeywell, they don't have anything you can configure to cure the short cycling problem if you encounter it."Well that's my story and I'm sticking to it."

I had some initial troubles installing the unit but after find the actual power feed down on the furnace board and tapping into it, the unit powered on no problem. Setup was easy and it's proven quite reliable. Managing the HVAC from my smart phone is nice. I rarely use the actual unit but it looks a lot better than the ugly LCD unit I had on there.

I wish I could set the Heat/Cold temperature ranges to a tighter difference. Currently it forces a 3* separation and in my house, that can make a difference in comfort. However, for the cost, I recommend this vs the competitors.

Also, honewell is good and notifying you of planned maintenance if the app link to their servers will be down. Other than that, I've had zero connectivity issues.

Great Thermostat! I read a lot of the reviews prior to purchasing and after receiving mine and installing it myself I dont see what the 3 star and below reviews are about. the unit was not difficult to install, the back-plate / mounting plate seem to be fine and I had no issues with the wiring. The only thing I can figure is that the other people with the lower reviews probably had no business installing a thermostat themselves or probably anything else for that matter. It does take some dexterity to wire the unit. The wires and slots for the wires are small. But other than that..Read the instruction, watch a video or two that Honeywell has or on YouTube and put it on the wall. No big deal. I like the thermostat I purchased and it does appear to work much better then the factory Carrier thermostat I replaced it with. The HVAC heat pump unit actually cycles properly now and the temperature in the house seems to be much more consistent. Two Thumbs Up!

I'm giving a head-to-head review. I've had both a Nest 3rd Generation thermostat and this Honeywell touchscreen thermostat. I like both a lot, actually. It depends on what you're looking for in terms of deciding which is better for you specifically.

I love the simplicity of the Honeywell's touchscreen. And I like that it tells you the outside temps and humidity, the date, and time all on the home-screen, all at once. Nests have much less info on the screen and you need to turn the dial and find everything, like weather, etc. On the Honeywell, to navigate to settings and schedules, there are touchscreen tabs at the top of the screen. Pretty intuitive.

Wiring:
The Honeywell absolutely requires a "C" wire to work. If you don't have one, you will need to run one for the Honeywell for it to work. I originally did not have one, but I had one added for $100 by an electrician. If you don't want to go through the expense or hassle, you may want to go for the Nest instead, because while the system works best with a C wire, it can work without one. But it depends on how much power it can pull from the other wires. Not having a C wire can make its Wi-Fi connectivity spotty/intermittent. And that means sometimes you can't interact with it via the mobile App and delays in it knowing what the external weather is.

Apps:
Nest has its merits, for sure, like their App that gives a lot of insights as to how you're doing with efficiency (like showing that for the past week, Monday, the heater only ran for 15 minutes; and Tuesday, it didn't come on at all... that kind of thing). I will say, however, Honeywell and Nest keep improving their Apps continuously, so as soon as I comment on App features, they change and have new functions... so that's a positive for both products. Who can be upset with constant improvements?

Aesthetics:
Both the Honeywell and Nest are very slick/modern looking. With this Honeywell, having the ability to choose your screen color to work with your décor or style is something that's pretty neat. Or you can change it up when you're bored. The Nest, however, does not have a function to change its color. It is always black. On the other hand, the Nest itself with its circular face is just pretty cool looking on its own. I'll leave you to decide what is more pleasing, as it's a matter of opinion.

Some notes about programming your schedule:
Nests, are all about "learning" about you. So, in default/factory setting mode they are set in "auto" schedule program mode, which means you go about your daily routines and "train" it, so it learns your preferred home temps and schedule. If you're letting it "learn you", it goes something like this... You to wake up, change the temp, leave the house and adjust the temp before doing so, come home and ... You get where I'm going. Finally, after a few days of that, it pretty much understands your patterns (unless you're really unpredictable/erratic). That learning feature can be awesome for some, since some folks want to let it do the work. But some people are more control freaks (like myself) and want to tell it what temps at what times to come on and off from the get-go. So, if you find the learning feature takes too long to learn your schedule, simply read the directions and turn off the auto learn function, and then program your schedule to however you want. The Honeywell does not learn and has you set your desired temps and schedule from the first moment you install it by default. But it gives you quick-set recommendations, which make setting up the schedule super-fast.

Bottom line:
Both are absolutely great thermostats. I love them both for different reasons. Maybe the biggest difference for some would be the "C" wire requirement for Honeywell (if you don't have a C wire in your wall already and if you don't want to have to have that wire added).

I always read reviews before purchasing and find some quite helpful, so I hope you find this review helpful!

This thing is glorious. It has a bright, easily readable screen that is crisp and clear, and it looks nice on my wall. Installation was (mostly) a snap, and took less than 20 minutes to get it from Amazon box to on my wall.

I bought this thermostat for four reasons: 1) It seemed to have more functionality than the NEST, 2) It was about $100 less than the nest, 3) it works with Wink, and 4) I can use set it up for monitoring by my electric company (CPS in SATX), and I'll get ~$120 in rebates, which lowered the cost to purchase to ~$40!

A few nuggets of advice that you might find handy: check what sort of heat source you have in your house, whether it's forced air or a heat pump. If you wired it correctly (after obsessively checking five or fifteen times) and it's still blowing hot air when your AC is nominally on, then you have that particular setting configured incorrectly. Go back and change "forced air" to "heat pump," or vice versa. Also, when you first turn on the unit, there is a five-minute lockdown to prevent the system from blowing itself out. Just wait it out, and go from there. (These things are printed in the instruction manual, but... yeah, I stopped reading once I saw where the wires were supposed to go, so I missed this. Be smarter than I was, and read at least the quick-start guide all the way through.)

I purchased this thermostat for my father. He isn't a big tech fan so I was worried he wouldn't be able to use it. He loves it! It is extremely easy for him to use. He even purchased a second one for the upstairs unit.
Normally I would install something like this myself and be able to give details, but we already had a professional over installing a new air conditioning/heating unit and he offered to install it for no extra charge. I spied on the installation a little and it just looked like a few wires.
Once it has power, there is an easy to follow guide to set all your defaults, wifi and even colors.
Honeywell has an app so you can control this thermostat from your phone when you are away from your home or if you just don't want to get out of bed at night to adjust it. Setting that up was pretty easy. You create an account on Honeywell's website. It will ask you for your thermostats MAC address which you can get right from the thermostat screen. Once done, download the app to your phone (iPhone in this case), sign in and all your controls and current temperature are right there.
Overall, a great product that will help you reduce energy costs.

Been very pleased thus far. No issues with displayed temp not matching ambient temp - and I am using the 24v dc wire from the heat pump to power the unit, with batteries as backup. I've read several instances where people have had an issue with the 24v dc connector causing their thermostat to 'run warmer' than the room really is. What I can say is that we have noticed a huge difference in how our heat pump performs. It seems to run much more efficiently - it runs more frequently but much shorter cycles and the house is much more constant, temperature-wise. I would have given the thermostat 5 stars, except I had to drive quite a way to buy a 1-foot length of thermostat wire to put in a jumper to make the heat work correctly (after a call to tech support). If you do NOT jumper the W1 terminal from yellow with a heat pump with emergency and aux heat, you will only get heat if you run the thermostat up to the point where it calls for aux heat. The old thermostat did not have this jumper in place. Regardless, I think they should provide a jumper wire - not everyone has a piece of thermostat wire just laying around. Other than that, I am completely pleased with the performance, especially for the price of this unit.

I chose this digital thermostat because of it's larger digits. I don't need a programmable model but it's easy to set this to SETHOLD so it does not revert to automatic setback if you know how. The booklet is clear and they do have U.S. phone support. I have 2 and like the clean design. It's a 2 piece design so you can snap off the thermostat from the wall plate. The only disappointment for me is there is no provision I can find to set the backlight always on. It's located in a dark hallway and requires me to push the button to read the display. I do have power provided by the furnace controller but I think the battery inside may power the backlight. I suspect but am not sure that if the battery were to become exhausted the thermostat might just revert to it's preset values. This would definitely not be good for my needs and I must thus watch the battery indicator for this. Maybe I can confirm this one way or the other with their phone support. Then again maybe I should just remove the battery and see what happens.

Pretty easy to set up. Set one day, can copy/paste to others. Kind of a pain to cycle through all days/times/settings to adjust weekend days, but in reality shouldn't be doing this very often. Took one star away because the ambient temperature was about 2 degrees F off. Had to adjust it. One other small complaint. If you want to temporarily change the setting away from what's programmed, there are two buttons available after adjusting: "Next" and "Hold". If you (or someone in your household, lol) accidentally pushes "Hold", it holds that temperature setting indefinitely, ignoring all programming... Make sure to use "Next" if you want next programmed setting to kick in when it's time. For the price, I'm happy with my purchase.

So far this product works great. I installed it myself with little problems. If I have on peeve or two it's the instructions. There are 6 choices they give you depending on your unit. If you're like me, I just know it's a gas furnace.The help line only open Monday -Friday 9-5. So if you do it on the weekend like most of us, you are SOL.If you purchase it from Home Depot, don't ask tbem. All of them are clueless and nothing like their commercials.But besides that..nice unit.

I purchased this because the Honeywell that came with my new house was not programmable. Installation was very easy since the letter scheme on the old Honeywell matched the Lux. The new thermostat looks very cool and modern in my house since it is basically just a big touchscreen. For some reason I was expecting the cool blue backlight to be on all the time but it isn't and I guess that is probably good since it would drain the batteries pretty quick, it only lights up when you touch the panel. The touch screen is very nice and I had no problem using it to program the thermostat. My local Lowes carried this TX9600TS model as well but it was almost $20 more than on Amazon. I'm very happy so far and I would recommend it to others.

I recently installed this in my apartment, as what i had before was solely a temperature gauge.The thermostat it replaced was a heat pump system(the most wires)I was constantly adjusting the thermostat when I woke up, when i left for work, when i came home, and when I went to bed.I bough this has a permanent addition to the apartment, and being permanent i did not want to go with the app enabled devices that were more expensive.This thermostat met all my expectations. it has a 4 time 7 day programmable setting with an adjustable offset. The offset prevents the A/C from toggling repeatedly, which helps keeps the electric bill lower.It was easy to install and took me around 45 minutes in total.The only downside is that it is a bit time consuming to setup the different time and day temperatures, and the system is unforgiving if you make a mistake with the settings. This is a small downside, as I do not constantly change the settings, but still something to consider.

I had an old Honeywell thermostat on this house I purchased last year. It was programmable, but was a pain in the neck to set up. So after I got my Amazon Alexa, I checked out the Amazon website for a reasonable priced thermostat that would work with an Echo. This Honeywell caught my eye, so I read the reviews and decided on this one. Since someone mentioned in their review that the warranty would be compromised if it wasn't installed professionally, I paid my H/C guy the $60 that he wanted to install this when he came for my yearly system checkup.It is a really nice thermostat. It gives your local weather conditions, temps, humidity ( inside and out) and time. You can change the color to suit your taste. Not only does it work with Alexa--it also works via your downloaded phone app. Yes, if you unexpectedly discover that you'll be gone most of the day, you can change the settings through your phone app. Convenient!The only reason I dock a star in the rating is because for some reason, in the middle of the night, the screen gets light enough to act as a nightlite. I don't know why, but it is a little irritating. Other than that, operation has been flawless for over 6 months now.

Looks good, easy install even if you do not have the proper "C" wire but the "smart" recovery mode never really learned to time the furnace to reach the scheduled temperature. In fairness, our weather and the resulting ambient temperature has been very volatile this winter. But furnace would frequently fire to early, sometimes by over an hour, and the temperature would exceed the scheduled temperature both in time and heat by a considerable margin. We finally resorted to turning off the "smart response mode" and just use the thermostat the old fashion way. At least we have wifi access (which we will probably never use) and it displays the outdoor temperature with an additional component. I was also disappointed that it does not integrate with our second furnace system using Honeywell's zoned wifi system other than through the Honeywell server portal. I had anticipated using our Honeywell remote thermostat to control and monitor both furnaces and their zones. In summary, the stat could be smarter and more integrated with the current Honeywell products.

This was a great buy. It cost 200+ in the store so the price is great. I picked this because I wanted wifi, app enabled thermostat. I did NOT want the stupid AI Nest crap. no thanks. You can get cheaper wifi but I paid extra for the nicer looking design and the weather integration. It was very simple to install and connect to my router. I reduced it 1 star for the following 3 reasons.1. The tabs on the wire connectors were flimsy and 1 broke off exposing one of my wires during install. In reading the manual afterwards it does specify to ensure your wires are perfectly straight before inserting them so there is a warning. Be sure to follow this and you will avoid my mistake. It did not impact operation at all just annoying.2. When it disconnected from my router 1 time in 3 months of owing it, it did not recover gracefully. I had to delete the connection and make a new router connection.3. there is a slight delay in the touch screen responsiveness. Enough to be annoying but not a gam changer since I use my phone mostly.Overall its a great product and I will be buying a second one for my downstairs. I wanted to test this one before buying both. I would reccomend this over the more $$ Nest anyday.

Love the T-stat, it connects easily, and I didn't need to do any fancy port forwarding etc for my router to get it to work. It controls it reliably, or at least it has for the past 2 days.I took off a star for 2 issues with installation.First, the snap-in connectors I'm not a fan of, personally. Being on both sides (a left and a right) inserting the wires definitely needs some needle nose pliers. I prefer the screw in terminals. Having to relocation this thermostat I fear those small snap in connectors will wear out. Hopefully any replacements would be cheap (if ever needed) since it's just a back plate. Also, be sure to cut back your wires if your t-stat wire doesn't have room to move into the wall. Mine was stapled tight on the other side of the drywall, and if you have the smallest amount of excess wire, the tstat will not snap on. I had to re-do the installation after cutting an inch off of each wire.The 2nd issue I have with the installation is that they don't describe the wires very well, just the colors. One connection is O/B-W, and if you have an orange, a white and a blue, this was confusing. I wish they would say "the O/B/W is for the reversing valve". Installers will know this by heart, but going from a Bryant tstat to this, I wanted to make sure I got it right, and I had to do my own research. For those going from Bryant, my experience was that O/Orange goes to O/B-W and the W/White goes to W2 (emergency heat).I would buy it again, and plan on buying more for a vacation property I have.FWIW, While on vacation this week, I was able to remotely program it to stay at 80 degrees cool until 3am and then go down to 75 until 6am, then back to 80. I did this rather than the vacation mode because it allows my system to "bank" the cooler air when it's cooler outside and run at peak efficiency, hopefully reducing the amount of run time during the hottest part of the day. Since I can put the system back to 74 when driving home, the "vacation mode" doesn't appeal to me.Note to Honeywell, I wish the vacation mode supported that economy method I used (bumping down at 3am for 2 hours).

The bottom line: the thermostat works perfectly well, but installation can be tricky, at least for an older Water Furnace geo-thermal system. Water Furnace has an internet connected system for its newer units, but nothing that can run an older unit. I had read of horror stories with trying to use Nest on geo-thermal systems and this thermostat was recommended by a geo-thermal installer/consultant. "You can do the wiring yourself," he said. Wrong: one look at the way the Water Furnace displays its wiring scheme was enough to convince me to hire a professional.And here's the lesson: I hired the same company that had installed the geo-thermal system for the previous owner 13 years earlier (the consultant was based much further away). Truthfully, I was uneasy when I asked the technicians who showed up told me neither had installed this thermostat before. About an hour after they finished and departed, I realized I could not lower the settings -- or even turn off the thermostats (two zones). Nor did the company answer its phone (1pm). A recording provided an "emergency number" -- but its mail box was full. I called Honeywell customer service and a 30-minute on-hold wait later, got connected to a rep in, I believe, India. That's OK. Except the phone line went dead in middle of the call. All I had learned to that point was that if one removes the digital face of the thermostat (like some old car stereo units) it shuts off. To skip ahead several days, I got the consultant to come down and reinstall the wiring and settings...all seemed to be working fine, except...Lesson 2: Be careful with the digital face plate. This thermostat has a base that is screwed to the wall. You attach the various wires to terminals on this base plate. Then the digital face just "snaps" on and the thermostat comes to life. YOU MUST BE CAREFUL ON HOW THIS FACE 'SITS' ON THE BASE PLATE. There are perhaps two dozen tiny pins that must be carefully aligned and pressed into place. Unfortunately, one of the pins got slightly bent and didn't connect properly. The thermostat worked, except the supplementary propane boiler would not kick in (all geo-thermal systems have, or should have, a "supplementary" system). Yet another call (and fee) to a third company fixed this problem.Now that the installation is correct, I find the thermostat works flawlessly. I can control and program it from the free app. The daily and weekly programming is the easiest I've encountered. The Internet connection has worked more or less flawlessly.I'm rating this four stars because I believe the installation headaches, while partially self-inflicted, shows just how complicated it can be to wire up correctly -- at least for an older Water Furnace geothermal system.

Unlike the older thermostats which are battery powered, the Honeywell RTH9580WF WiFi 9000 needs the "C" wire to operate. The "C" wire provides the needed power. For full functionality the wire between your HVAC unit and the thermostat needs to have 5 wires (C, R, G, Y and W) That is for a conventional gas system for heating using forced air and AC. For other systems, such as heat pump, check the manual which can be downloaded from the product page on Amazon or from Honeywell.If your wiring does not have 5 wires and you do not want to go thru the expense of pulling a new thermostat run, you do have a few choices:1. Reassign one of the existing wires to be used as the "C" wire. This will lose some of the fan control options.2. You can use the Venstar ACC0410 Add-A-Wire for all 24VAC Thermostats.3. You can use the Honeywell THP9045A1023 WireSaver Module for Prestige Thermostats.The third option seems to be the best. The cost of the Honeywell WireSaver Module is about half of the Venstar Add-A-Wire and it is a cleaner, more elegant installation.Now, if you read the User Guide for the thermostat you probably noticed in a few places where it says "Do not use K terminal. For future use". That statement is probably true for older versions of the thermostat and/or its firmware. Honeywell Support confirmed that the RTH9580WF thermostat will work with their WireSaver module which uses the "K" terminal.The only thing you have to make sure is that your heating/AC appliance's control board does provide the 5 connections needed (C, R, G, Y and W). I suppose that some older system may not provide all connections.The installation using the Honeywell WireSaver is straight forward. The attached pictures show it all.The RTH9580WF thermostat has all the features I need and then some. If you create an account on the mytotalconnectcomfort website and add the thermostat there, your thermostat will receive software updates as they are released by Honeywell to fix bugs and hopefully to add features. You can also configure to get email alerts and you can make changes to the temperature settings, fan settings and you can even edit the schedules. This comes in handy when you are not at home. Even when you are at home, it may be more convenient to make schedule changes on your computer instead of the small touch screen.You also use apps for your iPhone or Android phone. I am using a Lumia 950 (Windows 10 phone) and Honeywell has no app available. Also I am not aware of any future plans for such an app. Not a big loss though since I can access the mytotalconnectcomfort website using my Windows Phone the same way I do it on my computer.The only thing I find missing when I compare the RTH9580WF thermostat with others is the reports. It would be nice to be able to get reports about the power usage and savings via your email. These reports would add the 5th star.This thermostat works great for me. I only installed it about 24 hours before writing this review so I have nothing to say regarding the long term operation. However my past experience with Honeywell products was great.

The unit is very good and has been in service almost 1.5 years. We do not program, but could.Anyway, I am not thrilled about the switches on the side. Very hard to operate between positions. All controls could have been digital.

Not so easy to program as it sounds. Tip: put the battery in, program it, then plug it into the wall: sitting down under a good light helps

my wall didnt have a wire for power so i ad to use the battery, the unit buzzes when the blue back light comes on, its really loud and the back light never stays on, so you cant see the temperature in the room. although i think its a great unit/value for the price, it could be better in functionality and ease of use.

The Lux TX9600TS offers some advanced features at a reasonable price. It’s capable of performing well, but there’s one critical caveat.The thermostat can be powered by:- Batteries alone (2 AA alkaline batteries)- 24 volts AC alone- 24 volts AC with battery backupIf your thermostat cable has a 24 volt AC common wire, it can be connected to the thermostat's “C” terminal to provide the power. This can be used alone or in addition to installing batteries as a backup. According to the manufacturer, the thermostat has non-volatile memory for the program, but you will have to reenter the current time and day if the thermostat has no power source for more than one minute. For convenience, the thermostat can be programmed while removed from the wall if batteries are installed.I tested the Lux TX9600TS with my heat pump over a three week period in heating season and made the following observations.When powered by batteries alone the thermostat performed well –– accurately displaying and controlling room temperature. In Heat mode with the thermostat’s swing setting at +/-0.25°F the room temperature differential measured by a min/max thermometer 6” from the thermostat was no greater than 0.7°F.After connecting AC power to the “C” terminal, the temperature displayed by the thermostat suddenly decreased 2°F, then slowly increased 5°F (a net increase of 3°F) as if the temperature sensor was being heated by the power supply. Adjusting the thermostat’s calibration improved the accuracy of the displayed temperature, but the magnitude of the error fluctuated over time.In Heat mode with AC power, noticeable temperature swings and prolonged cycle durations occurred even though the thermostat’s temperature swing was set at its minimum of +/-0.25°F. The room temperature differential was high as 2.4°F measured by a min/max thermometer 6” from the thermostat.After disconnecting AC power from the “C” terminal, the temperature displayed by the thermostat suddenly increased 2°F, then slowly decreased 5°F (a net decrease of 3°F) as if the temperature sensor cooled until it reached ambient temperature. At this point the thermostat accurately displayed the ambient temperature at the default calibration of 0°F and provided good temperature control.The disadvantage of powering the thermostat by batteries alone is that you must remember to replace the batteries when they get weak, and make sure to have fresh batteries on hand.As a result of the poor performance of the Lux TX9600TS when powered by AC, I purchased a Honeywell RCT8200A (identical to the Honeywell RTH8500D), and began comparison testing.Although the Honeywell lacks some the features of the Lux, including adjustable swing, adjustable offset and energy usage monitor, it performed very well when powered by AC –– accurately displaying and controlling the ambient temperature. The room temperature differential measured by a min/max thermometer 6” from the thermostat was no greater than 0.7°F, matching the Lux’s battery-powered performance.Both the Lux TX9600TS and the Honeywell RCT8200A / RTH8500D have an optional recovery feature. With recovery enabled, the thermostat attempts to reach the desired temperature at the scheduled time by changing the temperature setting early.The recovery feature isn’t just for comfort. A thermostat with a good recovery algorithm can save energy with systems that have a second heating stage that’s more expensive to operate than the first stage (for example, a heat pump with electric resistance auxiliary heat). During recovery, the thermostat gradually increases the temperature, maximizing use of the more efficient first heating stage, and minimizing use of the second stage. If you have such a system, you can save money by using the recovery feature even if you don’t need it for comfort.The recovery performance of the Lux and Honeywell models I tested is somewhat limited because they are not capable of monitoring the outside temperature and adjusting the recovery accordingly. That capability isn’t expected at this price level. These thermostats estimate the recovery time based on previous performance.I don’t have the capability of measuring the energy use of my heating system while controlled by each thermostat under identical conditions, but I did observe the recovery durations. I allowed each thermostat to “learn” how long it took my system (a heat pump with electric resistance auxiliary heat) to reach the programmed temperature setting for several nights. The Lux TX9600TS began recovery no more than one hour early. The Honeywell RCT8200A / RTH8500D began recovery as long as three hours early in order to minimize use of expensive auxiliary heat.Comparing the displays of the two thermostat, the Lux has larger characters, but the Honeywell’s light green backlight appears brighter and provides better contrast than the Lux’s blue backlight. Both thermostats turn off their backlights seconds after touching the screen. This annoying behavior is understandable if the thermostat is operating on batteries, but I’d prefer the backlight stay on at least one minute when powered by 24 Volts AC.If you want a thermostat with adjustable swing temperature and adjustable temperature offset between the first and second heat stages, the Lux TX9600TS is worth considering, but only if you are willing to power it with batteries alone.I would rate the Lux TX9600TS as follows, contingent upon its power source:4 out of 5 stars if powered by batteries alone.1 out of 5 stars if powered by 24 Volts AC.

I like the thermostat. I have issues with it though. About 4 times a year the unit "freezes" up. The thermostat acknowledges that the actual temperature but it never turns the ac or heat actually off. When this happens I usually wake up in the middle of the night with my house at about 60 degrees and turn the thermostat to OFF. I let it sit like that for a while and turn it back on a couple hours later and it usually performs fine from there. I am not sure why mine does this and reading other people's comments it does not seem like anyone else has issues with this. I never had any issues with my old thermostat and it does not happen often but I worry about it when I go out of town. Good unit otherwise

The thermostat looks great, is easy to install, and has a lot of features. However when the back lite is on, it makes a high audible buzz noise. I knew going into it this may be an issue, and when I tried to show my roommate how to use it, first thing he said after the screen lit up "whats that buzzing sound?." You will hear it and it only buzzes when you touch the screen and the back lite goes on. For sixty something it is a value compared to what's out there, as long as you are okay with the buzzing it will make.Second thing I want to point out, the model I got from Amazon was the TX9600TSa.... The "a" is the newer model.

I bought this in conjunction with a new furnace. The install was very easy and I had this wired in less than a minute. It was up and running on my network in about 5 minutes. The biggest pain is the setup on Honeywell's website. It would be nice if the registration was quick and easy but they require a lot of information which drives me crazy. That being said the app was simple to install and setup. The integration with my Amazon Echo wasn't as easy as I thought it might be but again, these parts of the setup don't impact the basic usage of the thermostat. So minus one star for the app/web configuration part of the install.

The one thing I don't like which is why knocked off an extra start is the temperature is off by 2 degrees. When the thermostat is set to 72 degrees my old thermostat, as well as two AcuRite thermometers/humidity monitors I put in the same room read 70 degrees. The humidity guage is also off by around 8%. It really doesn't affect the furnace operation and is more annoying than anything else so I'm pulling a star on this review.

Disconnects from SmartThings about once a month. I purchased this thermostat because I preferred the aesthetics over others on the market. However, about once a month (because of software updates I presume) it disconnects from SmartThings and I have to go through the painful process of reentering my Honeywell login information to get it back online.

Additionally, as other reviewers have mentioned, the mounting bracket is poorly designed. You have a 50/50 chance that your thermostat will hang loosely because the bracket doesn't grab the thermostat well enough.

Fancy version of a standard stat. Wish I would have bought the Nest as it does metering, motion, phone detection, etc to truly drive cost savings. This item just gives you remote access to the unit nothing more than that in my opinion.

I should have looked at new Nest reviews, since the updates and changes that product is solid. Three of my friend have it now and it is 10x the product this is.

Easy to install, requires common to be hooked up to power it. Had to dig that out of the wall as many stats do not require the common to be used (including the Nest).

I will be moving this stat to the other zone and adding a Nest to my main zone. They wont talk but that is fine as the secondary zone doesn't run much in this house.

I researched the thermostats to death. I had no reason to replace the old Honeywell thermostat that came with my house. It looks like it is the original thermostat that came with the house when it was built 30 years ago. So in my research I considered the Nest thermostat (and I really wanted to get it), but I settled on the Honeywell mostly because I wanted the option to set my own schedules rather than have the device "learn" what I like.

I purchased the Honeywell 9580 in June 2015. I promptly installed it on my wall when it arrived to replace the original Honeywell unit that came with my house. We added the device to our wifi network. My SO and I then downloaded the "Honeywell Total Connect Comfort" mobile app, configured the account, and created our schedules from the app. At this point there was no reason for us to ever touch the thermostat on the wall again.

In fact, we didn't touch the thermostat after we had the mobile app working. We enjoyed the ability to adjust the temperature, power state, and schedule of our fancy thermostat from anywhere. Hell, we even turned it off and on from the airport when we were going on or returning from trips! It's wonderful to come home to a sufficiently cooled/warmed house!

Then the problem arose.

One morning (Jan 2, 2016) I came downstairs to find the the color scheme had changed on my unit. I had asked my SO if she had changed it, but she said she hadn't. I tapped the screen to change it back to the color scheme that we prefer. To my surprise, it changed back to our color scheme immediately when I tapped the screen. Odd? I went about my day.

Later the same day I received an alert from the "Honeywell Total Connect Comfort" app stating that my Honeywell device was no longer connected to the internet. Wow! I'm impressed! Great feature indeed! So I wander over to my thermostat and discovered that the screen was black. Very odd. I tapped the screen - nothing happened. I tap the screen again - still nothing happened.

So then I called Honeywell Support. They had me pull the thermostat off the wall and check the circuit breaker and also check to see if there is power across a couple wires. The circuit breaker was fine. There was no power across the lines. Honeywell Support then told me to contact HVAC to find out what's wrong with my furnace.

I contacted a local contractor service which came out the following day. They "jumped" my thermostat, installed my old thermostat back on the wall, and told me that one of the transistor caps is damaged on the fancy Honeywell 9580. Sure enough, it fell out just flipping the thermostat over.

We called Honeywell Support again to report that the device is still not working after HVAC checked it out and that one of the transistors is now "broken". Honeywell Support essentially blamed us for the physical damage and explained that they would not honor their warranty as a result. We explained that the thermostat worked perfectly for the 6 months that it had been on the wall and the only reason it was off the wall was because it STOPPED WORKING and a HONEYWELL SUPPORT REP instructed us to take it off the wall. So how does it get damaged sitting on a wall for 6 months? Honeywell provided us with the email address of a "manager" named Paul Arntzen (case # 00168634) and instructed us to take pictures of the device and email that "manager." We emailed Paul on January 4th. We received no response. We emailed him again on January 8th. As of today (January 16th, 2016), we still have not received any response.

IN SHORT
The device worked perfectly for 6 months and we did love how it worked. However, due the to crappy support from Honeywell, we will not be purchasing Honeywell products anymore.

EDIT
We eventually did get it replaced for free, but it took at least a dozen emails and several phone calls. YMMV. The way that we got results was that we used the "feedback" option on Honeywell's website. Someone got in touch with us, provided us with an email address of a manager and asked us to send pictures of the device and details of our story. We did. Someone responded and asked for our address. Shortly thereafter a brand new device arrived at our door. We put the new device into operation and it has worked without issue thus far. We kept the original Honeywell thermostat (30 years old and non-digital) just in case we get a repeat issue. I ended up selling the old broken thermostat on eBay for a decent amount of money - the person who bought it apparently fixed it and he is happy with it. Changed from 1 star to 3. I can't in good conscience give this a 5 star rating due to the customer service.

If you have a Gas Furnace with Hot Water Heat -- BEWARE -- nowhere will you read this on Honeywell's website, however you will require an alternate 24v power source (not run off the furnace). Why? Because the Gas Furnace will briefly power down when a "call for heat" happens. This reboots the thermostat. Called Honeywell -- They knew about this problem immediately -- get calls all the time. However, you need more than just the "C" wire to solve this problem. You need to run a 4th "RC" wire, and go buy a 24v transformer to power it. This was a very bad decision by Honeywell not to tell people about this upfront. Luckily I ran 2 extra wires, but if you run just a C wire you will be quite upset to find you will need another wire run. Honeywell could have added a $1 capacitor to the design to solve this problem, however why do that when they can have me run more wire and buy a $20 transformer.

Also, for those thinking this will capture utilization metrics, like "hours on per week", or an activity log of some kind. Nope. A $200 thermostat that looks pretty. Guess I'll have to contact the NSA to get that data.

Very complicated install and directions in comparison to store bought

I liked the product fine while it worked. Just over two years (25 months to be exact) after I installed it, the temperature wouldn't go above 61 degree with the thermostat set at 70. This went on for over a week. I thought something was wrong with the furnace, so I called the repair guys (not cheap for me because I live very far out in the country and the repair guys have to drive over 30 miles to get to me). Anyway, they looked it over and said the furnace was operating fine. On a whim I turned the thermostat to 80 and the temperature came up to 70. A thermostat of this quality should last much longer than two years.

Easy to install however the room temperature appeared to be at least 3 degrees higher that it actually was. I compared it 2 thermometers that I placed in the same area as the Lux unit. I know are very accurate. Don't waste your money. I decided to return it for refund. I later ordered an Emerson unit. Much more accurate and more user friendly and less money.

I gave this device several months of trial. However, it has proven to be almost impossible to program and certainly impossible to see in normal lighting conditions. Even the backlit surface which only lights when you touch the screen has very little contrast between the so-called numbers and letters and the background.In programming you have about 4 to 6 seconds to enter your data to program the machine. Then the light goes out and you can go longer see it. It proved it proved impossible for me to program properly and certainly to check my data out. I have not returned it, but I have purchased a replacement.

The thermostat looks nice but unfortunately has flaws. When powered from the AC when back light is on it emits annoying high frequency pitch. I would have accept that but the thermostat was failing to maintain temperature within the programmed range. The shift was up to 2 degrees. I had an older and cheaper RITE TEMP that was working better and which I put back in place.

The thermostat "works" in the sense that it reliably turns the furnace on when the temp is a few degrees below the set temperature, and turns it off again when the temperature is a few degrees above the set temperature.However, the temperature sensor is inaccurate and unreliable. The thermostat routinely displays the current temperature as 3 or 4 degrees warmer than the actual temperature (as verified by independent measurement). That forced me to redo my heating program and set higher values for all of the temperatures. This took about 5 minutes, which is not a huge deal, but it was something I've never had to deal with on any other thermostat.More importantly, the device emits a high-pitched whine whenever you activate the touch screen. The noise isn't terribly loud, and it goes away as soon as the screen shuts off again, otherwise I would have returned it already.Given the bugs, I fully expect this device to fail soon. When it does, I will not be replacing it with another from this manufacturer.

I have owned this unit for less than two years, and it recently began reporting our indoor humidity quite inaccurately (6-8% lower than actual level). I contacted Honeywell customer "service" and received this reply:

"RTH9580WF does not have the feature of controlling humidity from the thermostat, it just displays the humidity settings on it. There is no option to calibrate the humidity settings on the thermostat. This thermostat can display 5-6 degrees off when compared to a hygrometer.

You may get the unit replaced from the place of purchase, however it will display an off of 5-6 degrees."

Be advised, it is inaccurate, and Honeywell will do nothing about it.

I purchased this item in April 2015. It worked great, I loved using the app to change the temp settings. One of the reasons I bought this particular model was because it had a lock screen, so I could try to keep the teens in my house from changing the temperature (all claimed it wasn't them that changed it). That feature is very poorly done, very difficult to unlock the screen when needed, then you have to go back in and change the settings again to lock it. Better would be to unlock it then have it time out after a few minutes.
Anyhow, I was still happy with my purchase, and even bought another Honeywell thermostat for my downstairs, though not this model,just a basic wi fi model, so I could control my whole house with the app. The basic model is about half the cost of this one, and does everything this one does, with the exception of the problematic lock feature. So it doesn't have the fancy touchscreen, not really necessary for function.
Anyhow, just a few months after I purchased the second thermostat for my downstairs, this one just failed. Unfortunately, the 12 month warranty is 5 months expired. I am not sure what actually failed in it, but it would turn on the compressor when the air should come on, but then it would turn off again just a minute later. Using the downstairs unit the compressor would stay on as it should. I confirmed that it was the thermostat and not something else by re-installing my old basic thermostat that I had kept. Things worked perfectly with that thermostat installed, so not my HVAC unit.
This is a lot of money for a thermostat for it to last less than a year an a half. Now I'm upset I bought another of the same brand for my downstairs, as I was trying to avoid using two different apps to control my two units, but I can't bring myself to purchase another Honeywell at this time. Maybe I'll get a Nest.

Bought this unit to replace an older Honeywell Wifi thermostat because I wanted scheduled fan control times to circulate the air. Install was a breeze (although paint and drywall touchups were needed; this unit barely covers a 1 gang box) due to already having the correct wiring.

The touch screen is a bit annoying .. using the back of a pen or a key is much easier than trying to use your fingers sometimes.

Biggest complaint is the temperature sensor. As other reviews have noted, it's a bit schizophrenic. It's also very slow, or very fast to respond. In most cases, you will experience a 3-5 degree fluctuation in the room temperature before the sensor even registers a 1 degree change. If you can handle that, then this product might be for you. If you rather have a thermostat that works but doesn't look as pretty, check out some of the older (cheaper) Honeywell Wifi Tstats.

I have 2 of these, and they behave the same. I have several older models also installed in other buildings which are much more stable on the temperature readings, resulting in much better climate control. The lack of stability isn't awful, just annoying. I'll keep using these because the scheduled fan control is an important feature (which I'm sure they could add to their older models, but they'd rather force you into upgrading to a far less superior unit).

Purchased the Honeywell Wi-Fi Smart Thermostat in January of 2015. Worked fantastic for 9 months then my spouse reported that the display was blank one evening while I was away ... sure enough I could not connect to it via my smart phone during this 'outage'. A few hours later the unit came back to life - no explanation for the system outage. During this time, the thermostat is unresponsive ... so temperatures in the house start to get uncomfortable very quick. It's been doing the same thing for several months now ... sometimes it blacks out 3-4 times a day while other times it seems to work okay for several days in a row. Very disappointed with the fact that I cannot return the item even for a partial credit. Something is certainly wrong with it ... I've reset it by removing it from the wall ... no help at all.

Well it worked great for just over a year. Bought it in January 2014 and it stopped working today, April 11 2015. It has a 1 year limited warranty so its out of warranty, but it states, "This warranty shall not apply if it is shown by Honeywell that the defect or malfunction was caused by damage which occurred while the product was in the possession of the consumer." Honeywells customer assistance definition of that is once you buy it, install it, and it works, warranty is void.

For the most part though for the last year my bills have been almost $30 to $40 cheaper this past winter than last. Never went a summer without the Honeywell in this home so I have no comparison there. It does what it is suppose to do, but mine pooped out just a couple months after the warranty. My problem was that it would not turn the furnace on anymore. It would work with the AC and the fan. I put in my old thermostat that I still had luckily and it works just fine. Put Honeywell back in after that, and it wouldn't work.

This Thermostat produces a very annoying low pitch noise any time the back display lights up. First I thought my unit was defective, so I ordered another one. Same thing. Brand new out of the box issues. So if you are sensitive to hearing I wouldn't recommend it.

I connected this thermostat exactly as the instructions said.I set the temperature to 71°F and set the set point to 80°F. I flipped it to HEAT and the fan came on right away but no heat came on.I reset the set point to 45°F and flipped it to HEAT again and the fan came on right away and didn't go off.I reconnected the old thermostat and it worked just the way it is supposed to.

didn't work after two months.......

Doesn't even look remotely as bright as you make it look here?........first one failed haven't even tried the replacement. The first one cost me $202 just to have my old one put back in.because of a defect in the first one!

So poorly made that one of the screws you need to loosen to insert the wires is too tight to loosen (even with two people and vice grips!). Even their own instructions tell you not to tighten it too much. Pathetic.

This thing is garbage. Easy enough to install and set up but will not hold temperature. I set unit to 69 and it will drop all the way to 65 and run secondary heater. Switches won't relay to turn fan on. I tried calling customer service/tech support at 4pm and left my phone plugged in was on hold for 2 hours until they eventually disconnected me at their closing time 6pm. This thing is junk.

I don't know who else bought this thermostat but I am wondering if your unit turns off a random times and then turns back on. Mine is doing it but I can still use my phone to turn my heat on but it resets my schedule that I had programmed. Weird I know. But is anyone else having this problem?

This product has many nice features;
- It installed easily / instructions were great!
- It looks great on the wall
- It's easy to use

However, and this is a BIG and ultimately fatal however
- If the product looses internet connectivity, it may not, and probably will not, reconnect without personal / onsite interaction.
- This was confirmed with a call to Honeywell tech support

I purchaced this for a vacation home where I could remotely monitor interior temperature over extended away periods of time. During the last Honeywell initiated internet update, I lost connectivity and have never been able to reconnect, making this product useless. I have a Nest remote thermostate in our other home, and have never had this issue, even with internet outages. Unless you plan to always be present to reconnect your thermostat from time to time, I recommend you look at other brands

Update: Problem solved / replaced with Nest!

Note: I had requested to return this thru Amazon back in November, even though I could not do so until I returned to our vacation home in June. June was well past the allowable return period. I printed out the return label in November. Removed and returned the Honeywell product when we got back to our vacation home and received full credit. Amazon rocks! Why would you ever buy from anyone else!

This thermostat did not work - at all! It heated the house rather than cooled it. We tried it a few times and each time it was a bust! We had to put our old one back on. On a side note - the customer service was really good. And so was the return.

Very disappointed. It was awesome while it worked but it died after 14 months. Honeywell support was horrible and their response was to simply buy another one because "it happens". Well no thank you. Replaced it with Nest and so far I'm very happy. Especially since they have a 2 year warranty!

Worst customer service experience I've ever received. I was on hold for 45 minutes until I got a supervisor. I called because my unit broke and was still under warranty. I called once and troubleshooter with Honeywell's tech department and the unit still did not work. I called back this second time and was told I had to go through Amazon.com for the warranty. When I called Amazon.com they told me it was Honeywell. So I called back with Amazon.com on the line, which is when I was on hold for 45 minutes. They still haven't honored their warranty because they need me to troubleshoot it AGAIN! I'M GOING NEST OR ECCO NEXT TIME!! NOT WORTH MY TIME AND AGGREVATION.