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.

When you don't want the heat or cool to come on at an appointed time, and you want to control it the way you want it, and don't want to fidget around with a lot of buttons you can't remember which is which - this is the thermostat for you.

I Just Installed Yesterday, Easy to Install, and Just what I wanted. I have been out of the Business, of servicing 8 Years Experience.Honeywell was my Preference. I had to order a Back plate, since the one there a older unit was too Small..

Very pleased with the product. Works SO much better than our old thermostat at keeping a constant temp in our home. Very, very pleased with the purchase. Hubs said it was super easy to install as well.

Perfect no frills thermostat. Keeps extremely accurate temps. Mom loves it. The Thermostat that was installed by her heating and cooling co. was a complete turd. This fixed the problems. No programmable BS, no nothing... just heat when its cold out and AC when it's hot. There is a setting for auto cooling and heating for zones that require this, like desert climates that switch temps from extreme hot to extreme cold, but do not worry about this if you are not in one of those climates... This setting will only be enabled if your furnace is already wired for this action. So if yours is not, you will not even have the option to engage this feature. This should alleviate any concerns that this thermostat is for you or a loved one who is into as simple as possible. My only critique of this thermostat would be that clearly it's target audience is the elderly or people who have difficulty with technology, so why did you make the digital read out so small? It should have been at least an inch larger as there is plenty of room on the face of the thermostat and LCD tech is what? 40 years old now, so it would have added about .01 cents to the cost of manufacture. Anyway, nitpick!

I had an old White Rogers thermostat that was malfunctioning. It was installed in an area where it receives direct sunlight through some overhead windows. Therefore, the thermostat has had an enormous amount of temperature cycles. Over the years, it has caused mine to become extremely inaccurate. Sometimes it would not shut off after the A/C had cooled off the room considerably.I am so glad I purchased this replacement thermostat made by Honewell. This was my first experience with a digital thermostat that includes a backlight. What a great touch to modernize the central air control panel. It was very easy to follow the instructions regarding installation of the thermostat. What I like best is that they have coverplates Honeywell 50002883-001 Coverplate available here on Amazon as well to cover up the footprint left by the previous older thermostat. Most likely these Honeywell thermostats will be bought in unison because the new thermostat is very likely to be smaller than the older thermostat.I removed my old thermostat and made note of all the wires. My existing install had all the wires color coded correctly, so it made installation of the Honeywell thermostat a cinch. This is pretty much plug and play. I opened up the existing holes, installed the anchors and installed the coverplate and mount. After wiring to the backplate, I installed the thermostat and the batteries. The unit powered on as expected and I was able to check out all the options. Very easy to install and use.

This is NOT the most advanced thermostat on the market, so if you are looking for the most advanced, this isn't it. But after the other trash one i had installed was gone, i was very happy with this because it was exactly what i was looking for. This thing has GOOD instructions, and while it has many options to set on the initial start-up the instructions are very informative. For my heating system it was a simple install of 2 wires and mount (My home has a Forced Air Heating System). Depending on things like if its gas or electric, you may have a few more wires to hook up, but i found that the back of the device was also marked clearly and i assume it would not be much more difficult to instal a few more wires. My Heater responds instantly from the commands on the thermostat, whereas my old one would lag for about 30 seconds before a response. This is NOT programmable, so if you just want a simple set temp and go, this is the one for you. The battery compartment is easy to access and remove to change batteries.The only functions on it are:1- adjust temperature2- toggle ON/OFF of your heating system3- toggle manual / auto setting on your fan (manual is more like ON since manual just turns fan ON until it's stopped)Note - I do not have air conditioning built into my system so have no idea if you did have that installed if the toggle on/off of your heating system may automatically activate your A/C or not.Conclusion - If you would like simple well built Thermostat that will do what it is suppose to if installed correctly I could not recommend one more than this.

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.

I really like this thermostat. We had the manual version for about 4 years and it was good but we really wanted this version where you can setup everything under the auto setting. Installation was very easy and everything worked great from the start. Even setting up the programming was easier than what I expected. If you follow the directions exactly as they have it, you can go wrong.

Exactly as described - a simple, clean, non-programmable thermostat. Unlike some others, this model displays both the set temperature and the current temperature. Many of the other inexpensive programmable thermostats only display the set point. The display is clear and the backlight is effective.

We chose this thermostat because there are usually people in the house and we don't the extra expense and hassle of a programmable thermostat. We were also looking for one that didn't automatically switch back and forth from heat to cool. It's too expensive and wasteful to run the opposite unit just for an hour or two of temperatures beyond the preset comfort range and those days are quite numerous in north Texas.This thermostat is working quite well and was very easy to install ourselves, but we were replacing a similar Honeywell thermostat that only lasted about four years. I hope, but don't really expect, that this one will last longer. I still gave it four stars because it's inexpensive and easy to replace.

It works well enough that I am not returning it, but there is no way to set the number of degrees of 'deadband'. In my case, the number of degrees looks like 1, so my furnace is cycling more frequently than with my old thermostat. I sense I am wasting money because of this. I'll probably call their support when I get irritated enough.

Installation can be confusing depending on the thermostat you are replacing. I replaced an old mercury thermostat and had to use Google a few times to be sure I wasn't making mistakes. Aside from the confusing wiring situation, installation was fairly easy. With my old thermostat my (propane) package unit would run fairly often, usually with cool to luke warm air. With the new thermostat I get warmer air for shorter periods of time. Love the digital readout, my mercury thermostat was not at all accurate, which is why I had to replace it. My only concern is being uncertain of how accurate it is. The readout on my thermostat and my space heater are usually about 3 degrees apart (with the thermostat saying it's 3 degrees warmer than the space heater says).

It was easy to install, and it does just what it says it does. Note that the "auto" (i.e., the ability to automatically go from "heat" to "cool") is not enabled by default, so you need to go into the setup mode to enable it. It makes something of a "click" noise whenever it kicks on the A/C or furnace. That doesn't bother me, but some might find it annoying.My wife wishes, in retrospect, that we had gone for a programmable one - but I've always found those to be such a pain to program that I never bothered. (Lesson: Check with spouse before deciding!)

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.]

We've been using this thermostat for 4 months, and so far so good. It looks nice on the wall and it is accurate.UPDATE: After 10 months, we began to have trouble with this thermostat. The temperature indicated is not the temperature of the room. We had the room set at 67 and it was actually 81 degrees. It almost seems to "Stick" sometimes and then it starts working again. I am afraid to see the gas bill this month!

Promised that you didn't have to manually switch back and forth from cool to heat mode. While it's true this thermostat can do that, the instructions recommended not using that feature if the outside temperature falls below 50 degrees. To turn on/off this auto switch mode requires a multi step process, so it seems easier to just manually switch from cool and heat myself. Otherwise, it's a perfectly functional thermostat. I don't notice any benefits or drawbacks compared to any other thermostat I've used.

The wiring in my old thermostat and this Honeywell were different, the manual failed to explain it, and I couldn't figure it out. So I called the 800 number and asked for help. The man who "helped" me was the rudest person I've dealt with over the phone in years. He spoke down to me in a very brusque manner, wouldn't let me explain to him what the problem was and, in general, treated me very poorly. While he was lecturing me, I figured it out myself, and when I told him what the problem was, he said, "Oh, I was getting ready to explain that to you, but you kept interrupting me." Right!!!I wrote to Honeywell's corporate office and have yet to receive an answer.The thermostat is fine - inexpensive, works well and I'm happy with it. Just be forewarned if you need help with the installation, you may be treated like crap! BTW, the instructions are not well done. There are a few important steps missing.

lasted less then 1 year woke up this morning could not shut off heater off or a/c had to turn breaker off and when I turned breaker back on it would start all by itself just ordered a new one had to go with one day delivery its getting hot here. last time I order one.

The unit is simple to operate and works fine but I really was looking for a display that lit up well at night and the picture in the catalog looked to clear and sharp but the display in reality is dim and not very readable. That is my only issue with this unit.

I purchased this item for its advertised visibility. As noted by other reviews the background lighting isn't even close to what is depicted on the packaging. In my opinion that verges on Deceptive Advertising. It performs as stated but doesn't help my poor aging eyes. Too bad the background isn't brighter.Honeywell shame on you.

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.

the description is misleading, it says it has an easy to read backlit display and on the picture it is shown to be brightly lit. I have 20/20 vision and can hardly read it. The display is dim and the numbers are small. The temperature control is good

Purchased this to replace a thermostat that required batteries, no where in the description did it say that it needed batteries. After receiving this thermostat an opening package, I discovered that it required two batteries. Now I am stuck with a thermostat that I don't want or need and out with the cost. I feel like I was mislead by not mentioning that it required batteries in the description. I am sure that it is a good thermostat, but it is not what I thought I was getting.

Not compatible with the unit in my apartment.

This thermostat did not work with my unit.

This lasted all of 2 years...

Purchased without reading directions carefully. Will NOT WORK with heat pump WITH auxillary heat (2-heat, 1-cool). However, the reason for the bad review is that I called honeywell's 800# that comes with the unit. The guy struggled with English, placed me on hold several, several times. Then returned to ask Where I bought this and When....because he said, this very unit is now OBSOLETE. He stated that they no longer manufacture or service this thermostat.

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.

Failed in 4 months

Did not work for our system

We bought this product in January, and the return policy was for 30 days. The end of February was our 30 days. When we first received it, the screen acted up, but I ignored it. Now, just a few weeks after the return time is up, the screen is completely messed up. We can no longer use this item! Not happy at all!!

Temp reading off by 8 deg. Thermostat set around 68 and this is showing 76. Honeywell brand doesn't guarantee anything.

Stopped working after a few months. I had to purchase a new one from a HVAC company who came to repair my AC.

Supposed to be a universal unit, but it doesn't work on my system, so it was a complete waste of money and time. Had to buy an OEM unit.