Side by Side Comparison of: Honeywell

I love this controller so much, thanks to honeywell！ Seriously, unless you are looking for the futuristic look, why spend $300 to buy a nest? My home has two AC system, and I have replaced both thermostat with this guy! Here is why I like it:1) Super friendly to people who travel. App is easy to use and interface is very intuitive. You never have to worry that your home gets too hard/cold, or your utility bill exploded in extreme weather2) For landlords, you can control home temperature without having your tenant fudging with the temperatures while you are away3) You can set temperature schedule to make home environment more comfortable.Note: You do need to muddle through the installation process. We ended up tweaking a bit on my AC's circuit board a bit.... But overall it's well worth the investment!

This is my 2nd purchase of this wi-fi thermostat and I'm very pleased with the results so far. The first one was purchased about 2 years ago and was the typical $99 but the one installed today only set me back $79 BUT I was surprised that for the first time in probably 15 years of using Amazon, I was charged sales tax. That ride was bound to come to a stop sooner or later. Oh well, still can't beat the great prices and free shipping on most items and I'll continue to use Amazon as much as possible.Anyway, the reason you're reading this is to gain some clue as to what/how to get that dreaded "C" wire that is required to operate this device in wi-fi mode. I realize all systems/set ups are different but in my case, I did have at least 1 or 2 spare wires on the existing thermostat wire and was ultimately able to connect that extra wire to a 24V continuous connection within the air handler or heating unit, if you prefer. I'll admit, the one I installed a couple years ago was a real test of my wits and my will. Conservatively, if I count the time researching the internet and climbing in and out a dozen times to where the gas furnace resides, it took me about 4-5 hours...I know, ouch, but I've found the convenience of adjusting the thermostat from anywhere in the world to be well worth it, hence the 2nd purchase for our downstairs unit that was installed today. Redemption was had when I met the mailman today and had my new unit mounted, wired and working in about 30-35 minutes, start to finish! What was my secret? The set up was very closely matched to the work I did a couple years ago and with just a little luck on my side, I connected the extra C wire to the correct wire nut right off the bat. This unit is an old school hydronic system (uses hot water to provide the heat for the house) matched to a conventional AC condensing outdoor unit so I wasn't so sure but again, all systems go in about 30 minutes.In a nutshell, you have to connect that C wire, assuming you have a spare wire already in your thermo wire, to 24v continuous electrical supply in order to power and run this thermostat. I'm sure electricians and AC guys may find this amusing and could do something like this blindfolded but for a commoner (there's that C reference again), this was a major score to get this one running quickly. Love it!

For $84 and free 2 day shipping, this is the best WiFi thermostat for the price. I looked at all the expensive options, but I eventually chose this based on simplicity and the fact that you can do pretty much everything from the thermostat itself. I had a honeywell thermostat that looked exactly the same, except this one has one extra button. That one only gave me the ability for weekend and weekday schedule. With this thermostat, I can have a different program for each day. Just that alone is a major upgrade.The WiFi capabilities are much more than what I could ask for. Only gripe I have about the WiFi is that it is not dual band and only works with 2.4ghz networks. The app is simple to use and offers a few more benefits than using the thermostat on the wall. With the app, you can group days you want to have the same schedule and set them all at once. You can also set a hold for a specified amount of time. If you change the temperature it will say hold until your next set point. Then you can change that time to whatever you want. Then at the end of the hold it will automatically return to the schedule. It also works with Alexa once you have enabled the Honeywell Skill.Here are things that I don't like, but are not enough to take a star away.-There is no battery backup and it requires a C Wire. But since it's on WiFi, it will automatically set itself if you disconnect or if there is a power outage.-There are no reminders to tell you that you need to change your filter.-If you manually change the temperature, it will show "hold until XX:XX" on the screen instead of the actual time. They could have programmed it to also show the current time at the top corner or something.All in all, it is a GREAT thermostat. The WiFi capabilities are nice, and if you forget about the WiFi or the WiFi stops working, it's still a GREAT thermostat. If you don't need all the fancy features of the nest or ecobee, then this is the thermostat for you. I just want to be able to change my temperature if my schedule randomly changes, and this allows me to do that. I am more than satisfied.

I have had my WiFi thermostat online now for about two weeks. I am amazed. The setup was simple. The app for my phone is very easy to access and use. I live in South Dakota where it gets very cold in the winter - it is 2 below actual as I write this - and very hot in the summer 112 last July. We travel a bit and it is such a relief to put the system on permanent hold while we are away and as we return home kick the system back on and have a comfortable house to come home to. I am traveling 230 miles to home in the morning, when I am about an hour out I will release the hold and by the time I get home, the house will be right at 70 degrees. It is currently holding at 48 degrees.Of course I have not had the system long and if it fails or begins acting goofy, I will update this review. As of now, I would give it 6 stars if I could.DakotaHoneywell RTH6580WF Wi-Fi 7-Day Programmable Thermostat

I absolutely love this brand and this model of Wi-Fi thermostat. I have purchased 5 of this exact model off of Amazon and absolutely cannot be more pleased with the product, the price and how it functions. Number one the price for a Wi-Fi thermostat is normally much higher. I purchased these for around $85 and yes that should be a concern when most Wi-Fi thermostats are twice that. I think the biggest difference is that this model does not have a fancy screen with all kinds of colors and digital eye pleasing features. However not knowing in advance I thought this would be a problem. It is not because with Wi-Fi thermostats you will never stand in front of that thermostat again. Once you install it you will use your iPhone or other wireless device almost 100% of the time to program and adjust the temperature. I have several businesses with these Wi-Fi thermostats and one in my home. It is one simple app on my iPhone that I open and can quickly monitor, adjust and if needed make program changes to the thermostats. The functionality is wonderful, the ability to program and making temperature changes is so easy. I will definitely buy this again when needed and I highly recommend the Honeywell because number one the price is some competitive and number to the functionality is amazing. I did purchase a different brand and the install and functionality was much more complicated and just not worth the fun of having a different brand. So when needed I went back to the Honeywell.

This may not do as much as a nest, but it does what matters. It is a programmable thermostat that you can control remotely.As everyone says this requires a c wire. Mine did not have the wire and the existing wire was old and wearing out. Great thing is that the wire for my furnace is a simple run and replacing it was quick and easy. I do have some hobbyist experience with low voltage wiring so I was able to hook the new furnace wire up easily. Of course all situations will probably be different. I understand there is a workaround if you do not have a c wire, there is a drawback but it was not a major one. I do not remember the drawback.After it was installed all I needed was a smart phone or tablet to connect the thermostat to my WiFi. There was an update where the thermostat had to reboot but that is to be expected and welcomed with things like these. During the reboot the furnace unit shut off but only for a minute.TL;DR great WiFi thermostat, just check that you have a c wire on your existing thermostat or feel comfortable with wiring for a fix or workaround.

Works as advertised. Got it two bucks cheaper here than at Menard's. Realising we only paid $22 for this, that little black smudge in lower right of display which some complain about, and is only visible when the light is on, is very insignificant and of no consequence. Silly people. Since wife is home all day, I have wake, leave, and return all programmed with the same time and temperature of 72° @ 5:45 a.m. Sleep is set for 65° @ 11:00 p.m. everyday. Weekends have wake, leave and return set for 8:00 a. m. The backlight feature is really nice in our darker hallway. Lights up when pressing the run button to check time and temperature. Fairly easy to program. Recommended.

The product arrived on time as promised. Although I am pretty handy with electronics and am pretty literate having a Juris Doctorate, I had trouble following the printed included instructions when it came time to program the thermostat. Fortunately YouTube had several videos showing how to operate this particular thermostat. After watching one, programming seemed easy. I am satisfied and can report that it works well.

Our old thermostat wasn't controlling the temperature at all and we actually thought we had a problem with our AC. I decided to try this first, and didn't want something fancy. I installed this today, which took less than 30 minutes start to finish with clean up and finding my screwdriver. The AC came right on and my house finally cooled down!It isn't super fancy, but the programming is pretty nice and our old one didn't have that option. It's been at least a month and it is still doing well.

Excellent thermostat. Easy to use and to install.update: thirty days after installing I got up one morning the screen was blank. Nothing worked. Changed batteries, nothing. Hit it on the palm of my hand and it started up again. This makes two in a row I had the exact same thing happen.

Works great. Tip: Don't do what I do -- read the damn instructions first. Rule #1 - LABEL THE WIRES. I foolishly assumed yellow would go in the Y slot, but in my case it went in the W slot...and Blue went in the Y slot. Had to pay a Just Answer HVAC guy to help me straighten out the mess of my own making.

This thermostat does exactly what it says it is going to do. It was easy to hook up, easy to program, and if you are on a regular schedule like myself I don't see the point in spending a few hundred dollars on a smart thermostat when this can do the same thing for 25 bucks.To hook it up I just removed the old thermostat, took a picture of the wiring, then wired this up the exact same as the old one. You do need a very tiny screwdriver to make the connections, but I think that is probably true of any thermostat. You also have to put batteries in it.

Installed two in Les than an hour, work well.had to climb up to attic to turn off the power and connect the C wire. Setup takes a few steps, follow the instructions and be patient, you'll be fine.One of the unit had one loose wire socket, so one the wires is not secure but just sits there, may cause problems later on, too lazy too exhangeI've always had Honeywell in the past 20 years,they are basic features but reliable. That's what I like.Not getting those fancy smart device things, it is out of control, we will all be brain dead.

I ordered this to control a gas stove we put in our basement. I wanted a WIFI thermostat so I could remotely turn the heat up before we went downstairs for the evening and then automatically turn down at 10 PM when we go to bed. The thing I don't like about it is that you can't have the back light stay on all the time. I have a Honeywell touch panel one in the hall upstairs which controls the HVAC. That one you can have the light stay on.

As a control freak and someone who occasionally forgets to change the thermostat before leaving for the day, this was an affordable solution that works for my needs. Haveing a similar Honeywell unit previously installed - the wiring was nearly the same. The biggest headache came from the WFI setup and im a damn computer tech. The bottom line is there must be NO SPACES in you WIFI SSID. I didnt test underscore ( _ ) but my assumption is it will not work either. Also, do not use special characters in your SSID (!@#$ etc) as they really arent supported.Another thing I didnt see mentioned in other reviews that i saw is that there is no data logging - you cant see what the high/low was yesterday or anything logging/data anywhere. You are literally just getting a Wifi controlled thermostat and for MOST people this will be enough. Abrupt weather changes/changing while on vacation/ easier programming schedules -- great for those instances. This will be a temporary unit for us until we replace our heat pump and air handler. Then we will decide on new WFI thermostat since there are rebates available. Most likely will not be another Honeywell unless their higher end stuff provides more control/data (logging temperature, prevent emergency heat, estimated costs, etc). In the end, i got what I wanted - a wifi controlled thermostat to change when I forget too. Now that I have it - i now know I want more

Easy enough to connect (take pictures of the wires before removing old one) physically and then electronically to WiFi. Register the device with Honeywell and install the Honeywell app on your smart phone. Using the app (or even via the website interface) makes it much easier to modify the schedule. Plus, you can configure the device to send you an alert if the power goes out. It's hard to get excited about a thermostat, but this one worked where the Nest did not. We've got two of them and for much less than 1 Nest. The WiFi setup can be a bit daunting for those less computer savvy, but if you follow the manual it will work. One item of note, if you connect and then change your Wifi password or network settings - in the manual, it walks you through "forgetting" the WiFi settings so you can connect again. That is easier to do than setting it up, but you will need the manual to decode what the numbers mean.

I have only furnace at home (no A/C). There were three wires to my old thermostat : Rh, W and G. Rh was jumped to Rc, but probably not relevant since I do not have an A/C. I shifted G to C at furnace and used it for C at thermostat. WiFi setup was a breeze and I could remotely control the system now. 4 stars because of an issue with the website. I can't change the schedule online. It says "Schedule Loading It normally takes 10 minutes...." every time I visit. If it ever loads, I will update here. Let me know whether anyone else faces this issue.Update. The issue "schedule loading" persists. Customer support gave me two options 1) wait for a few more days or 2) a complex hacking/resetting method. I am not ready for the second method so I am still waiting. While waiting, I am giving three stars.Update (11/2015). Honeywell fixed the issue at server end. It works as expected on apps and websites. I recently had to change the wifi router password. Resetting wifi parameters is not straightforward - you have to press fan and up button and select item 39. I wish they explained this in the manual.

This is a great idea and, once installed, works like a charm. I was disappointed in that it cost me over $500 to have 2 of them installed. The website says its easy to install and I'm no stranger to electrical work, but for my situation (my house is 14 years old), I could not install it myself and it took 3 installers 4 hours to make them both work. That said, they do work great. I have been across the country and was able to adjust the temp settings in the house via my iphone. The programming was easy and quick and I think we are saving money on oil.

At first I was worried about replacing my thermostat as I have heard horror stories on issues they had. I took a leap and purchased this one and it was so easy to install. Everything was labeled and the instructions were very detailed. It took me about 10 mins to replace my existing thermostat and another 5 mins to figure out the programming. All in all it is a good thermostat for what I need it for.I did have the mark on the bottom right of the screen that everyone has complained about and it is strange to see but I don't plan on looking at my thermostat too often.

I research every product that I buy online. After reading several reviews, I concluded that this was the best choice for my needs. I have a gas furnace and electric central AC. My old thermostat was calibrated about 2 degrees too warm, and there was no way to fix it, so for $23, it was worth buying a replacement. I looked at Lowes, but I didn't see this exact model in the store.I had never replaced a thermostat before, but this was extremely easy. I had my toolbox ready, including a small precision screwdriver, & it took me 7 minutes to install it. There are countless YouTube videos explaining how it's done, but the manual instructions are sufficient.The thermostat works great! It is simple to use. Programming it also dead simple. I like the fact that it doesn't have a hinged door that you have to open. All the buttons are always visible and easily accessible.The only reason I withheld a star in my rating is that the green LED screen has a bit of a smudgy looking flaw in the right 1/3 corner. It's not noticeable unless the screen is lit, but it's still a flaw, so I can't give it 5 stars. However, it works, it's easy to install, & the price is right. I would buy it again.

Easy enough installation. Has worked well so far. Display is not that easy to read without the back-light and the main numbers are a little smaller than I hoped.I am not using the cooling side since I have no air conditioning. It presented no problems working with a millivolt furnace.

I replaced an ancient Honeywell round thermostat with this one. I was initially going to purchase a much more expensive model to hide the cabling better but I just put this on top of the old gold faceplate that came with the old honeywell thermostat. Looks fine. It took about 15 minutes to install. The tools you will need:-Ideally a power drill or impact drill with a phillips bit to remove screws, and install new screws- a watch battery screwdriver to connect the black and white cables.- The box does not come with one.After two months of using this unit, there were no cost savings. I just didn't have to adjust the thermostat each morning and evening. What did happen is that this caused my ancient boiler to run inefficiently (the boiler would come off and on consistently when cold) causing my gas bill to go up significantly. The aquastat had to be adjusted and the low setting and differential were decreased by a homeservice heating professional.

Pretty decent, especially for the price. Two complaints: the LCD is poor quality and there is what appears to be "dust" (little black speckles) inside the LCD on the lower right hand corner. Other complaint is there is no C terminal so that the unit can run without batteries. The unit I replaced with this Honeywell was a super cheapo GemTech, but could be powered off the C wire, with batteries as a backup power source.Lastly, while not a complaint because I knew what I was getting, I wish they let you pick the degree difference when to turn on. +/- 1 degree is too little for my location, so it's turning on quite often. I know there is a workaround by selecting max number of times it turns on per hour under the advanced settings, but I prefer to set it by degree difference.

7/14/14I just installed this thermostat two days ago and so far it seems to be working great! I have never in my life installed a thermostat and after watching a YouTube video, I was able to do it without calling anyone for help. It's very straightforward, especially if your wires are color coded. It comes with stickers to label the wires if you need to and it comes with the hardware needed to mount it to the wall.The only things I dislike - and the reason I deducted a star - is that it's really hard to pull the faceplate off. I'm a little worried next time I do it I might even pull the whole thing off the wall despite being screwed in. It also takes batteries only although from what I have been told they should only need replaced annually and even then it will tell you 60 days prior to it dying that it needs changed. Another downside is that every time you change batteries, you have to program your settings all over again. But that's just me nitpicking. For the price, it's well worth it and should save me a lot of money on my energy bill.

This model works well and the app is fairly easy to use. I would have rated this a 4 or even five except for two things:1. The Honeywell documentation is weak, particularly from a troubleshooting perspective, and the phone support is even worse.2. This model has a software bug that does not allow the wake time to be set at 2:00 AM or earlier. The wake set-point will be ignored if set earlier than 2:15 AM. Email support claims this is a "calibration", but this "feature" isn't documented and I have used several other brands of programmable thermostats that don't have this handicap.

Pros:- Easy Installation- Easy Configuration/scheduling.Cons:- Loud clicking sound each time the thermostat starts/stops the AC (Very annoying).- Cannot control using local WIFI (LAN). You must control via internet using mytotalconnectcomfort.com website.

Product is okay, but could be better. Their controller app for Android is very, very basic and needs a LOT of work, but it functions for VERY basic stuff, if you don't mind it crashing and having to restart a lot..I do wish, though, I had waited 2 weeks, as the price dropped $10.00.Yes, I would very likely still buy it, as I live in the Desert southwest and need to reduce my power usage to as close to zero between 3:00 pm and 6:00 pm. But any programmable t-stat will do that.If their wifi app interface was better, it would be worth 4+ stars,,

As other reviewers have noted the set-up of the WiFi is no simple task. I do not knopw what the problem was the first two time I tried but finally had success on the third try. The biggest frustration was getting it into "Wifi set up" mode. The in structions said that if "when" the set-up fails you need to pull the unit off the wall for 10 seconds and it should start over. In my experience this did not work even when it was unplugged for over 5 minutes. There should be way to force the unit into wifi set-up without pulling it off the wall. On the programming front it was very tedious until I noticed the option to set multiple days to the same schedule. Too bad this was not explained from the start so that I could have avoided the frustration of setting up Monday, Tuesday and Wednesday on the same schedule.

This product worked as advertised eventually. Tech support from Honeywell is essentially non-existent. The thermostat apparently is not compatible with my Zyxel router from Centurylink. Called tech support and they could only read me the manual before hanging up on me and not calling back even though they asked for a call back number. When I called back, the new tech had never heard of a firewall. You will need to have someone who is internet tech savvy to make sure the WIFI hookup will work. In some cases, router ports may need to be opened. I had to disconnect and essentially reformat the thermostat about 8 times before it worked. Most was due to the router incompatibility.

UPDATE: After two years, it started behaving erratically (maybe got fried in the same storm that took out my computer?). In any case, for a replacement I opted for the Sensi UP500. After using the Sensi, I've lowered my rating of this product from 4 to 3 stars. See my review for that product.Basically, it does what it's supposed to. It's relatively painless to install (assuming you have the correct wiring setup and wireless network). And when combined with the app and online access, it's very easy to use.The mobile app is pretty good, but (annoyingly) requires you to login with an 8-digit password every single time you launch. And it's missing some really no-brainer features, like a "change filter" reminder, or the ability to automatically switch from heat to cool, based on a temp range. Or location awareness (my phone knows when I'm home, so why doesn't the app pass on that info to the thermostat, and adjust the temp accordingly?)The website is a little clumsy (it's not at all clear how to get from the landing page to the schedule). And I was really disappointed to see there's no data tracking (How long was my system running over X period? etc, etc).But for a fraction of the cost of competitors, it's hard to complain.USER TIP:I noticed shortly after I set the schedule, that the AC was turning itself on BEFORE the time I had it scheduled to go to a lower temp at bedtime (up to an hour early). I couldn't figure out why, so I contacted support. This is the email I received:[Adaptive Intelligent Recovery, also known as Smart Response, is a feature that allows the thermostat to turn on the system earlier than programmed, so the house is at the programmed temperature by the onset of the comfort period. // The Adaptive Intelligent Recovery feature calculates the recovery ramp based on the number of degrees away from the desired set point and previous equipment performance. The recovery ramp determines the optimum time to turn the heating or cooling system on. If the set point is reached too early or too late, the ramp is adjusted for the next day's recovery, until the set point is achieved at the desired time. // It is necessary to allow the thermostat at least 10 days to "learn" a new program. If the set point is adjusted or the thermostat is switched to off during the recovery period, the thermostat interprets this as a new program input, and the learning period restarts at day one. Please be patient while your thermostat is in this learning phase. // If you would like to disable this feature, press and hold the Fan button and the up arrow key for five seconds. The screen will then change, and you will see two numbers appearing. Press the Next button until the number on the left becomes 13. Use the arrow keys to change the number on the right to 0, then press done.]

This is my 3rd one. I bought first two for each unit in my house 5 years ago. One of them started acting up with flickering screen and lock ups after 2 years then it died few days ago. I tried resetting it and cleaning the contacts but it was completely dead. I didn't want to buy different one so I just bought same one so I don't have to switch out the backplate.

had the same issue as many others have. It works, but the LCD screen definitely looks like someone touched it and discolored it during install. Bottom right quarter of the screen is all fuzzy.

I bought 3 of these at the same time. All 3 are in use but suffers the same material defect/poor quality control. All 3's LCD have dark patches at the same spot and pattern.

UpdatedMy original purchase started "eating" batteries. A new set of batteries would be dead in about two or, at most, three days. Only about two days out of Amazon's replacement period, I contacted them and they would do nothing but advised me to contact the manufacturer (Honeywell).Honeywell told me that they would replace the thermostat but that it would take about ten days to receive my new one. As were were having a cold spell, fortunately I had kept the old bi-metallic one that had been there and I had to put it back. NOT a happy camper!The new one arrived as they said it would and, once again, I switched thermostats. The replacement has been working properly for several months now and no sign of batteries wearing out. Honeywell told me that a set of batteries should last about two years so it will take a while to see if they make it or not. I bought good quality premium alkaline batteries made in US so there should be no excuse for premature failure.In my opinion, Honeywell stood behind their product though I think they could have used expedited shipping but...AMAZON? NOT SO MUCH! TWO days and they wouldn't assist me! I now think twice about where I purchase my items even if they do cost a little bit more. Just the principle of the thing!

Not super well made or fancy, but I don't think it's going to break tomorrow either. Mine came with a few spots on the screen that haven't gone away, though it doesn't affect the utility of the unit.

I bought this at a local Menards store with assistance of the staff. I replaced an old round Honeywell mercury-switch model. Have the typical 2-wire setup for a very ancient (40 years old?) natural gas forced hot air furnace. I decided to squeeze some savings on the gas bill by lowering the temperature during the workday when I'm never home for 9 hours, and also drop temperature overnight as I like it cooler while I sleep.Installation was a breeze. I work as an office equipment service tech, so I did not expect any trouble figuring it out, your mileage may vary in that regard though. I had the required small screwdrivers on hand. The mounting template perfectly matched the old round thermostat, so I just reused the old screws in the original holes in the wall. As I customarily do, I did read the installation and setup directions prior to installation.Programming was also fairly easy. What you have to understand here is that there are 4 adjustable times of the day where the temperature can be allowed to change. Exactly what the amount I needed for my purposes. If you wish for fewer adjustments, just set 2 or more of the consecutive time events to be the same temperature. This is how I handled the weekend program, as I only wanted to lower the temperature at bedtime and raise again in the morning. I left the "away" and "home" at the same temperature as the "wake" setting to accomplish that. Again, you can adjust the time of day for these events in 15 minute increments. I did not see anything confusing about this other than I would forget to push the set button and think I was adjusting the temperature, and instead was changing the time. The numbers being adjusted flash, so that was just me not being observant.The reason for me giving 3 stars is this: there is no adjustment for temperature on/off cycle. That old mercury-switch mechanical thermostat was designed to turn on the heat a couple of degrees below the set temperature, and turn off heat a couple of degrees above. That allowed the furnace to cycle on fewer times, and not waste fuel warming the heat exchanger each time. This cheap Honeywell digital thermostat turns on the furnace with only a dip of 1 degree F, off after warming to set temperature. My furnace in my 100+ year old home with little insulation started cycling on every 12 minutes for short bursts of heat. Turns out that the temperature cycle is factory set and cannot change. The only way to gain some control of this is to go into the advanced programming features and adjust the "cycles per hour". Default setting was 5 (maximum) cycles per hour, thus the furnace turning on every 12 minutes (5 times per hour). I dropped this setting to 3 (20 minutes wait between cycles) and may readjust to 2 in the future. Naturally, the manual does not explain the cycles-per-hour setting other than generic recommendations for different types of heating systems. I can see this becoming a potential problem with actually causing me to use more fuel than with the mechanical thermostat. I'll just have to monitor my fuel use and re-evaluate later in the winter. I may need to bite the bullet and spend 2-3 times more for a different brand thermostat that will allow me to adjust the heat cycle to something that approximates the old thermostat more closely. Wish I had researched this prior to purchase now. Cycling the furnace on-off more often can also lead to it failing, and I do not see how taking a 3-5 year loan to pay for a new furnace saves me money. Everybody I know that replaced furnaces with higher-efficient models during the 1990's are replacing their expensive furnaces again. Mine keeps chugging along.11-23-2013: I bought the Honeywell trim kit http://www.amazon.com/Honeywell-50002883001-50002883-001-Coverplate/dp/B00096JC72/ref=cm_cr-mr-titleAfter installing, I am noticing that the temperature is tracking more correctly compared to a mercury thermometer on a nearby wall. I suspect that the trim plate is isolating the theromstat from the wall surface temperature (which is cool to the touch usually). The temperature is not fluctuating so badly. Furnace is not turning on at regular intervals this weekend. It's also a lot warmer outside, so again time will tell on this.

Very difficult to connect with Windows--actually I never did get it connected. The description does not say that you need a "C" wire--only when you open the installation manual does it mention that. The manual also doesn't say what a "C" wire is, or where to get one (you need a separate transformer), which means another wire in the wall. The customer service video was no help, nor was the call-in customer service. I ended up returning it and getting a more expensive, but more user-friendly brand.

Well it looked good, felt good but you know what? I wouldn't recommend it in an older home.Why?THAT DARN C WIRE!!!Yes, they have instructions on how to bypass the C wire and make it work, but you give up manual control of the fan, and you have to make concessions that you don't have to make with some other brands. There's a difference between a thermostat that works well, versus a thermostat that you have to make work. Being that I would have to "make it work" versus simply wiring it in and being done, I chose to return this product and buy another.

This is a tough item to rate. I loved the ease of installation. It was up and running within minutes. It connected to Alexa without issue. The interface is excellent. The Honeywell app is very usable. However, I had to return it. The temperature differential, otherwise known as the cycle rate, is +/- 0.5 degree. This thermostat was turning my compressor on and off within 5 minutes only to do so again within a minute or 2 when the temp went back up a half a degree. It probably cycled at least 10 or 12 times in an hour. That kind of constant on/off pulls a lot of power unnecessarily and causes additional wear and tear on the hvac system. Honeywell service center days that there is no way to change the differential and it is set that way to maintain as accurate a temp as possible. I returned this unit and purchased an Emerson SensiSmart. That unit allows the owner to set the cycle rate to slow, medium, or fast. I rated this one at 2 stars because in my opinion it is unusable, but I can see how other people might prefer this level of accuracy and, as I said at the beginning, I love everything else about it.

Minimally, the thermostat works. Several gripes will keep me from buy any more, however:1. I'm not sure the quality is there - In 3 years I've had 1 DOA, 1 quit working completely, and 1 quit working reliably.2. The Honeywell iOS app doesn't always work reliably.3. It's kind of dumb that a smart thermostat can't set its own time from the Internet.

Great thermostat, horrible service behind it. This is about the application service to remotely control the unit. When it works, it works great, but it has a frequent down time, and the folks at Honeywell don't seem to fix things that happen on their servers after hours. Just last night/this morning, it was down for about 12 hours. The application would throw an error that it can't connect to the servers. Tried on multiple devices, networks, all the same. The thermostat is on the network (i can ping it). Then suddenly after 8am this morning, it starts working again normally. I will also get notifications that the thermostat is offline, but I can see it on my network. I wish there was a way to override the remote access and go local network access only. Fortunately, the thermostat just continues as it should connected or not and you can control it locally.

The thermostat is fine as a wall thermostat, but the Wi-Fi remote connection is very unreliable. If the home Wi-fi drops even for a moment the thermostat needs to be reprogrammed and the remote connection will not work until it is set back up. The occasional convenience is not worth the aggravation of physically reprogramming the thermostat every week. Do yourself a favor and find something more reliable.

I have a heat pump and was unable to use since it was not compatible.

For some reason this thermostat is incompatible with our A/C however it works fine with controlling our Heating...we changed it out thinking perhaps it was a faulty unit but had the same issue.The switches used to control the thermostat Heat/Cool and Auto/Fan are very stiff.The display shows current temperature only instead of both current and programmed temperatures. Personally we prefer both displayed.

I was looking for a user-friendly programmable thermostat for my parents to replace their manual unit, so I decided on this one. Unfortunately, the one I received was defective. The motherboard was covered with a putty-like substance. Unsure if this would affect its functionality, I returned it. But, for what it's worth, this model looks nice.

The thermostat runs fine, it's great. The issue I have is with the display. Like many, many, other reviewers I received a unit with a black smudge in the bottom right hand corner that is only shown when the backlight is illuminated. I went to Walmart to get a new one, installed it, and saw it has the exact same issue. The complaints about this issue go back several years, and still they're being manufactured with this defect. Pretty dissatisfied over here.

first.. it was very easy to install. especially if you owned a similar one before and if you only have 2 wire heating system.. i installed it less then 10 minutes.. i think it took longer to find the screwdriver in the drawer..second. the product it self.. when i read the reviews everyone was complain that there was spotting on the lcd screen and i decided to get it anyway.. mine wasnt that bad but still there was spots on lcd.. kind of upsetting because the honeywell is a good company and for them to take out a product in this condition is unacceptable..finally.. would i recommend it.. it all depends if you need something cheap and works this is it..

The only reason im giving it 2 stars instead of one is because it was inexpensive. This thermostat does not keep the tempurature well regulated. I purchassed this to replace the only analog dial looking one that was on the wall, and so far wish i hadnt. It is fairly easy to get set up and to program, but the thing just turns on and off the heat whenever the heck it feels like it. For example: i may have it programmed to just stay at 70 degrees all the time, and it may be 60 degrees in the house and you cannot get it to turn on the heat, then other times when the heat is running it will keep the heat at 78 degrees for several hours and wont turn the heaters off!Im assuming unless all 3 i got (2 from Aamzon one from Walmart) of the same exact model are all lemons that it is just terrible, because all 3 zones that i have in my house are doing the same thing.

I am very disappointed with this product. I wanted a thermostat that could be controlled from my iPad. After downloading the app from Honeywell I am unable to control when my heat goes down at night and up in the morning.I would return this product except It is already installed and I would be out the installation costs.DO NOT BY THIS PRODUCT!

Could not get thermostat to work with standard HVAC a/c-gas heat system. Used a transformer to power "c" wire and unit powered up, but would operate properly. Had to return to Amazon.

when i installed the thermostat it tried to set itself on fire. but the single star (should be no star) is for the dealer, not the thermostat.In late march of 2017 i bought the "good as new used" honeywell wifi, programmable thermostat (RTH6500WF), from EverythingDeals, The package it arrived in looked fine and the unit looked new.. I didn't remove the thermostat from its package because it needed the "C" wire attached and my furnace system didn't have one. I decided to wait running the C wire until this fall because there was little need for the thermostat as it was intended to replace a working older one.this month i got around to running a pair of wires to the thermostat location. (C and Rc). as per the instructions I attached the two furnace wires to R and W and the two new wires from a 24 volt transformer to C and Rc after removing the jumper between R and Rc. triple checked to be sure the four wires were in their proper placement in the wall plate. checked to be sure the voltages were correct.When i plugged in the thermostat to its wall plate the display did not light. in a moment i smelled hot electronics and immediately pulled the thermostat off the wall. part of the plastic housing was very hot and had started to bubble. And there was something rattling around inside that had not been rattling before. not sure what happened, but clearly this was not a good as new thermostat.in talking with honeywell's overseas support about getting it repaired i was very nicely told i had to deal with the seller (EverythingDeals) to get it repaired, replaced or returned. But of course EverythingDeals has a "we don't care what happens after thirty days" policy.the galling thing is i had previously installed a honeywell T5 wifi thermostat and had no trouble doing it, including running a pair of 24 volt C and Rc wires to it. the install was no more difficult for the rth6500wf than it had been for the t5. the wiring was the same. the places for the wires on both units were well labeled and labeled with the same letters.so - bought a second t5 from amazon. used the same wires in the identically labeled sockets (removing the jumper) installed it with no problems (no burning) and it works as advertised.perhaps i am wrong but it seems sensible to think the unit was never tested to see if it actually was good as new. buyer beware.

Product would not work. Wired according to instructions. Has the same configuration as my current unit. Defective.. Seems I'm a day late in returning it... Not a Happy Camper....

Just installed it, but am one day beyond the return date and it does not work. Won't turn the air conditioning on, and it is wired correctly.

They die and when they die, they can cause big problems. I had one randomly change the set up program and instead of cooling, ran the heat pump up to 95 degrees before I returned to the house and found it--the heating contractor figured out what happened (that happened 4/22/17). Another house on 4/27/17 (fifty miles away from the other failure) suddenly went to heat while the thermostat was set to cool. Even turning the thermostat to OFF didn't cure the problem so I had to turn the furnace off. I've owned five of these over the past four years and used them in three separate locations; four have failed.

Horrible instructions. No labels on the terminals you figure it out and put them on yourself. Really Honeywell? What a joke! Don't buy this!

I did not work for more than 3 days after installation. Our heating guy that installed the one we had to buy to replace this one said he sees this Honeywell programmable thermostat not work more often than not.

This lasted 3 months before it completely stopped working.

Display was blank. I discarded the old thermostat before realizing the new one was dead. Spent a few days without heat as a result. Wasted some time on the phone with tech support who instructed me how to install aaa batteries. Ordered a replacement hoping it would arrive sooner than another make/model, but it was a day late. Replacement is working now but can I trust it to turn the furnace off before the house sets fire?

I successfully installed this thermostat and it worked just fine. The problem is after all the work installing it, the thermostat will not stay snapped on the back. I'm returning it for a better product. Honeywell usually makes a better product than this. Not attractive when it just hangs on the wall. I tried to contact Honeywell and gave up because of the long wait.

I have a standard central heat/air pump and this does not work on a "multi-stage" system (not sure how I could have determined that prior to trying to install this). Take a peek at your wires before ordering - I had a white wire labeled W2 which made this thermostat incompatible. On a positive note, Honeywell customer service was quick, very helpful and gave me a list of compatible models.