Honeywell Home RTH6580WF Wi-Fi 7-Day Programmable Thermostat

4.3 4.3 out of 5 stars | 14,449 ratings

Price: 69.98

Last update: 09-06-2024


About this item

ENERGY STAR certified. Help save energy, track your heating and cooling with monthly energy reports and get personalized tips on reducing energy use.
SAVE ENERGY AND GET REWARDED by checking with your energy provider about available energy savings rebates to save on your purchase (rebate finder link above). Plus, eligible customers can enroll in their local Utility's "DEMAND RESPONSE PROGRAM" which can reward you for allowing the utility to slightly adjust your AC or furnace temperature settings when there is high energy demand.
C-WIRE POWER ADAPTER REQUIRED: Before purchasing, check to see if this thermostat is compatible with your home and to determine if your home needs a C-wire power adapter.
SMART HOME INTEGRATION. The Wi-Fi 7-Day is compatible with voice assistant devices like Amazon Alexa, Google Assistant, Microsoft Cortana, and more.
THERMOSTAT THAT FITS YOUR LIFE. 7-day, 4 periods per day, flexible programming lets you sync your comfort with your schedule.
EASY OPERATION AND INTUITIVE. Big, backlit digital display and easy controls make for a user-friendly experience.
EASY-TO-USE-APP. Choose from the Total Connect Comfort app or the Resideo app to control your Wi-Fi thermostat anytime, anywhere.
COMPATIBLE WITH: Forced air (gas, oil or electric), hot water and steam, and heat pumps with electric backup. Does NOT work with electric baseboard heat (120-240V). C-Wire required.
Works with most heat/cool oil furnace systems. Will not work with heating only oil furnace systems unless a C-Wire is present. Ability to view local weather from web portal or app

Product information

Technical Details


Top reviews from the United States

Anon
5.0 out of 5 stars Good Choice, Solid Performance
Reviewed in the United States on March 2, 2022
Bottom Line: The installation was ALMOST effortless, and the performance has been rock solid. I'm very pleased by the unit and would certainly buy it again.

I, too, had to unplug the unit once during installation in order for it to complete the temporary wifi connection to my android phone. However, that was the only hiccup. Otherwise, the installation went smoothly. In short order, the wifi link to my WPA2-encrypted router was complete, using a 2.4 GHz channel per instructions. For the past month, I've monitored the home remotely to determine if I needed to engage the aux heat strips during unusually cold periods. I currently live 500 miles farther south, and have not yet moved into the home, so remote control of the HVAC was the purpose for the purchase.

The thermostat interface is simple and basic, but entirely sufficient. I don't have to mess with it to see the relevant information; it's all there on the main display. As a recently retired electronics engineer, I have an extreme distrust of new technology, because most companies chase the easily-wowed but ignorant masses with pretty bells and whistles at the expense of design maturity and reliability. To a former design engineer for the military, this is a frustrating trend. Similarly, I cannot abide the intrusiveness and privacy concerns over voice-activated devices monitored by Amazon and/or Google (or whomever). You can do all that lazy nonsense with this thermostat, but I don't want or need it. I want and need rock-solid internet connectivity and sufficient remote control for when I'm in a different state and I'm worried that the heat pump won't be able to pull enough heat out of the air to warm the house. And in this scenario, Honeywell delivers.

As with all purchases, particularly electronics, there is a risk of buying a lemon or experiencing infant mortality with one or more electronic components. Fortunately for me, I saw no evidence of quality concerns with the device. It appeared well-made, competently assembled, and sufficiently documented. I do urge people to follow the instructions carefully and slowly. I suspect I moved too quickly, possibly doing steps out of order, which may have caused my wifi hiccup. Either way, it was easily corrected with the power cycle and more carefully following the instructions.

I have no issues with the phone app. It works fine and allows me to do everything I want to do. It's streamlined, effective, and reliable. Surprisingly, it doesn't annoy with poor design details or irrelevant BS. (Not looking to be entertained by my thermostat. I just want the bloody thing to work and do what I tell it to do, when I tell it, without becoming a new and contrary personality in my life.) In this regard, the app has been a pleasant surprise.

In summary, if you are looking for a solid performer and you value reliability over gee-whiz style and the latest marketing fad, then consider the Honeywell RTH6580WF. It's a very good value, delivering full performance at a much lower cost than most alternatives. Consider repurposing all that saved money towards something of greater life impact than a "stylish" thermostat. Good luck.
floatinghomeguy
5.0 out of 5 stars Works well, but read the directions
Reviewed in the United States on July 24, 2024
I have a ground-source heat pump with 2 heating zones - upstairs and down. Since we travel a lot, I really wanted a system connected via WiFi that I could monitor and change remotely. had purchased a Nest learning thermostat for the downstairs for like $20 through my local utility with state/federal rebates, but they only allow 1. I wasn't excited about paying the retail of around $200 for another, so when I saw this Honeywell for $48 on Prime Day, I bought it.

The directions are pretty good, but I got into trouble when I didn't read beyond the basic installation instructions. As a result, I spent an hour+ of extra time with different wiring combos trying to make it work.

Turns out the thermostat default setup is for a very basic 1-stage heating and cooling system. If you have a heat pump, you will need to follow the directions in the Setup section following installation. They are very simple, and once I did this, everything worked great.

Some suggestions:

1. Go through the directions before you start install.
2. Take a picture of your existing wire hookups on your old thermostat BEFORE you disconnect all the wires. I did and this was very helpful in troubleshooting.

I have included a picture of my wiring scheme. My system is a ground-source heat pump with electric heat backup, but I believe any heat pump with electric heat backup would wire the same. For the price, this is a great thermostat and should serve you well.
Customer image
floatinghomeguy
5.0 out of 5 stars Works well, but read the directions
Reviewed in the United States on July 24, 2024
I have a ground-source heat pump with 2 heating zones - upstairs and down. Since we travel a lot, I really wanted a system connected via WiFi that I could monitor and change remotely. had purchased a Nest learning thermostat for the downstairs for like $20 through my local utility with state/federal rebates, but they only allow 1. I wasn't excited about paying the retail of around $200 for another, so when I saw this Honeywell for $48 on Prime Day, I bought it.

The directions are pretty good, but I got into trouble when I didn't read beyond the basic installation instructions. As a result, I spent an hour+ of extra time with different wiring combos trying to make it work.

Turns out the thermostat default setup is for a very basic 1-stage heating and cooling system. If you have a heat pump, you will need to follow the directions in the Setup section following installation. They are very simple, and once I did this, everything worked great.

Some suggestions:

1. Go through the directions before you start install.
2. Take a picture of your existing wire hookups on your old thermostat BEFORE you disconnect all the wires. I did and this was very helpful in troubleshooting.

I have included a picture of my wiring scheme. My system is a ground-source heat pump with electric heat backup, but I believe any heat pump with electric heat backup would wire the same. For the price, this is a great thermostat and should serve you well.
Images in this review
Customer image
Raj Against The Machine
4.0 out of 5 stars Moderate setup; some rewiring required. App ok, smart integration meh. HUGE data usage
Reviewed in the United States on December 25, 2021
UPDATE APRIL 2024 (1.5 years): Still working fine, still loving it. It’s probably my favorite smart home device, and I got lots of them. So nice not having to drag my lazy…to go and adjust the temperature. Was nice to have when I had actual furnace issues and didn’t have to constantly run up-and-down the steps (though Lord knows I need to) to switch it on/off or adjust the set point- just do it from the app.

Can’t believe how cheap it was (purchased used); it’s even cheaper now for a used one. I feel much better having gotten this over a Nest or Wyze or Amazon unit. I get a monthly email report showing usage (in hours).

I refuse to get the promo through my utility company for a $50 rebate, because they still have excessively high rates anyway, and then they could have control over my unit.

ORIGINAL REVIEW:
I bought this several months ago but waited until Christmas Eve to install it. (Not the best time if something goes wrong.) I already have a Honeywell non-Wifi programmable thermostat which has worked relatively well the past few years, and have installed programmable thermostats in other homes over the past 20-plus years. I had purchased a Wyze thermostat also but after seeing so many poor reviews and complaints, I shelved it in favor of a thermostat from an actual thermostat manufacturer.

Of course installing those required no rewiring, as they were battery operated and did not require a C-wire. This thermostat, like most other smart wifi-connected thermostats, requires a C-wire to power the unit.

Seeing I only have 4 wires with no C-wire, I had wanted to run a new 5-wire thermostat cable to my furnace, to have a C-wire, by connecting the new cable to the existing cable and pulling through the floor/wall. But after having found where the cable goes up from behind the furnace having almost no access, and looking in the wall cavity with a bore scope and seeing that pulling a new cable would likely snag, I finally deemed it as nearly impossible.

Luckily the new Honeywell t-stat comes with an addendum of instructions and even a jumper wire to convert the G-wire to a C-wire. What’s nice is that this means Honeywell basically legitimizes what is generally considered to be a “hack”. You move the existing G-wire to the C terminal on both the board and the thermostat - pretty standard procedure.

What’s different is that the jumper wire then goes between the G and Y terminals on the control board (even after moving the wire from G to C). I have no idea what the purpose of the jumper between G and Y is; I’ve never seen or heard anyone else mention this. You still lose separate fan control (because nothing is connected to the G terminal at the thermostat).

I actually decided to take a tip from electrician videos and used pigtails from the C and Y terminals on the board, as I was not confident the small screws would retain 2 or 3 wires at a time. I basically cut and stripped small lengths of extra thermostat wire, and attached one to the C terminal. Then on the other end I used a small wire nut to combine with the other existing wire(s) which were already going to that terminal. I did the same for the Y terminal. This to me made a cleaner installation, and would be easier to modify in the future should I wish to go back to the old thermostat, or install a C-wire adapter, or even finally have a 5-wire cable routed. It only needs to have the wire nut removed, rather than unscrewing the terminal. (Seemed logical to me after having done this on several electrical outlets and switches. ????????‍♂️)

The unit powered on as expected, and I went through the setup process, which is mainly setting the day & time. I have a plain gas furnace and central air conditioning, and the thermostat was already configured for that. It has many configuration options for different types of HVAC systems; one in particular allows you to have an Auto mode where it can switch between heating and cooling (rather than manually switching as most thermostats do). I tried this for a while but set it back as I saw no value in having it in my climate.

To connect the wifi, you change your phone’s wifi to the signal put out by the thermostat. Then you connect to it using the Total Comfort Connect app. You have to create an account, which I did on my PC, but you use the same login credentials in the app. It was fairly straightforward. Even with the phone connected to the 5 GHz signal, it was still able to link the device to the 2.4 GHz signal under the same SSID (I didn’t have to turn off the 5 GHz signal, as some other smart devices require).

You can control and program the thermostat either through the app or via the web page. You can change between heating and cooling modes, and also between fan modes (though again, the “On” setting is irrelevant; the thermostat will click but nothing happens).

I also managed to link the app with Alexa (which I use more often) and Google Home (which I rarely use), just to try each one. In each the functions seem to be much more limited; in fact in Alexa you can ONLY control the temperature, not the heating/cooling mode. Google Home allows this, but that’s about it.

One shocking thing is that I checked my router’s app, and it reported that just in the first hour after installation, the thermostat had used 1.3 GB if data. That seems like a huge amount for something that isn’t a streaming device. It’s not clear what that amount of data was used for.

Right now it seems to read the inside temperature 2-3 deg F lower than the digital thermometer I have in the same room. This is weird because the previous Honeywell thermostat used to read the same temperature.

UPDATE MARCH 2022: Meh, still ok but not game-changing or disruptive tech. I like the convenience of being able to adjust the temperature without going to the thermostat, but other than that it doesn’t offer much. No substantial energy savings to speak of. I linked the TCC app to Alexa, and it shows an estimate in the Energy Dashboard. I’m not sure if it’s accurate or not because it’s making a guesstimate of the gas usage. Would be nice if I could set a routine in Alexa so that if the temperature reads below/above a certain point, it kicks on the heating/cooling until a desired set point is reached. Actually in Alexa you can’t even change the heat/cool mode; only the temperature.

No issues with the wifi disconnecting like others have reported.
Customer image
Raj Against The Machine
4.0 out of 5 stars Moderate setup; some rewiring required. App ok, smart integration meh. HUGE data usage
Reviewed in the United States on December 25, 2021
UPDATE APRIL 2024 (1.5 years): Still working fine, still loving it. It’s probably my favorite smart home device, and I got lots of them. So nice not having to drag my lazy…to go and adjust the temperature. Was nice to have when I had actual furnace issues and didn’t have to constantly run up-and-down the steps (though Lord knows I need to) to switch it on/off or adjust the set point- just do it from the app.

Can’t believe how cheap it was (purchased used); it’s even cheaper now for a used one. I feel much better having gotten this over a Nest or Wyze or Amazon unit. I get a monthly email report showing usage (in hours).

I refuse to get the promo through my utility company for a $50 rebate, because they still have excessively high rates anyway, and then they could have control over my unit.

ORIGINAL REVIEW:
I bought this several months ago but waited until Christmas Eve to install it. (Not the best time if something goes wrong.) I already have a Honeywell non-Wifi programmable thermostat which has worked relatively well the past few years, and have installed programmable thermostats in other homes over the past 20-plus years. I had purchased a Wyze thermostat also but after seeing so many poor reviews and complaints, I shelved it in favor of a thermostat from an actual thermostat manufacturer.

Of course installing those required no rewiring, as they were battery operated and did not require a C-wire. This thermostat, like most other smart wifi-connected thermostats, requires a C-wire to power the unit.

Seeing I only have 4 wires with no C-wire, I had wanted to run a new 5-wire thermostat cable to my furnace, to have a C-wire, by connecting the new cable to the existing cable and pulling through the floor/wall. But after having found where the cable goes up from behind the furnace having almost no access, and looking in the wall cavity with a bore scope and seeing that pulling a new cable would likely snag, I finally deemed it as nearly impossible.

Luckily the new Honeywell t-stat comes with an addendum of instructions and even a jumper wire to convert the G-wire to a C-wire. What’s nice is that this means Honeywell basically legitimizes what is generally considered to be a “hack”. You move the existing G-wire to the C terminal on both the board and the thermostat - pretty standard procedure.

What’s different is that the jumper wire then goes between the G and Y terminals on the control board (even after moving the wire from G to C). I have no idea what the purpose of the jumper between G and Y is; I’ve never seen or heard anyone else mention this. You still lose separate fan control (because nothing is connected to the G terminal at the thermostat).

I actually decided to take a tip from electrician videos and used pigtails from the C and Y terminals on the board, as I was not confident the small screws would retain 2 or 3 wires at a time. I basically cut and stripped small lengths of extra thermostat wire, and attached one to the C terminal. Then on the other end I used a small wire nut to combine with the other existing wire(s) which were already going to that terminal. I did the same for the Y terminal. This to me made a cleaner installation, and would be easier to modify in the future should I wish to go back to the old thermostat, or install a C-wire adapter, or even finally have a 5-wire cable routed. It only needs to have the wire nut removed, rather than unscrewing the terminal. (Seemed logical to me after having done this on several electrical outlets and switches. ????????‍♂️)

The unit powered on as expected, and I went through the setup process, which is mainly setting the day & time. I have a plain gas furnace and central air conditioning, and the thermostat was already configured for that. It has many configuration options for different types of HVAC systems; one in particular allows you to have an Auto mode where it can switch between heating and cooling (rather than manually switching as most thermostats do). I tried this for a while but set it back as I saw no value in having it in my climate.

To connect the wifi, you change your phone’s wifi to the signal put out by the thermostat. Then you connect to it using the Total Comfort Connect app. You have to create an account, which I did on my PC, but you use the same login credentials in the app. It was fairly straightforward. Even with the phone connected to the 5 GHz signal, it was still able to link the device to the 2.4 GHz signal under the same SSID (I didn’t have to turn off the 5 GHz signal, as some other smart devices require).

You can control and program the thermostat either through the app or via the web page. You can change between heating and cooling modes, and also between fan modes (though again, the “On” setting is irrelevant; the thermostat will click but nothing happens).

I also managed to link the app with Alexa (which I use more often) and Google Home (which I rarely use), just to try each one. In each the functions seem to be much more limited; in fact in Alexa you can ONLY control the temperature, not the heating/cooling mode. Google Home allows this, but that’s about it.

One shocking thing is that I checked my router’s app, and it reported that just in the first hour after installation, the thermostat had used 1.3 GB if data. That seems like a huge amount for something that isn’t a streaming device. It’s not clear what that amount of data was used for.

Right now it seems to read the inside temperature 2-3 deg F lower than the digital thermometer I have in the same room. This is weird because the previous Honeywell thermostat used to read the same temperature.

UPDATE MARCH 2022: Meh, still ok but not game-changing or disruptive tech. I like the convenience of being able to adjust the temperature without going to the thermostat, but other than that it doesn’t offer much. No substantial energy savings to speak of. I linked the TCC app to Alexa, and it shows an estimate in the Energy Dashboard. I’m not sure if it’s accurate or not because it’s making a guesstimate of the gas usage. Would be nice if I could set a routine in Alexa so that if the temperature reads below/above a certain point, it kicks on the heating/cooling until a desired set point is reached. Actually in Alexa you can’t even change the heat/cool mode; only the temperature.

No issues with the wifi disconnecting like others have reported.
Images in this review
Customer image Customer image Customer image

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