Honeywell Home Wi-Fi 7-Day Programmable Thermostat (RTH6580WF), Requires C Wire, Works with Alexa

WiFi Thermostat, wide variety of configurations for different hearing and cooling systems. This is 24 VDC thermostat , it is not used for electric 240 VAC baseboard heaters. The thermostat requires 3 wires minimum. 2 wires to control the heating system for example, the third wire is the power to run the thermostat. This is absolutely necessary. The thermostat and application on computer or mobile device work very well. We use more than 8 of these thermostats in multiple locations. The configuration to WiFi are explained in the manual and can be followed. I would highly recommend this product and I believe is an extremely good value for function versus price.

Good product – Priced right. 7 day multi-time programming – Alexa integrated. Display underwhelming. Much more difficult to install than I expected. Unhappy with expertise of product support. My notes: 17Apr2020 Fri – Want thermostat control of heat pump with 2 stage heat/cool; Called Honeywell tech support; spoke with ‘Yerch’ – about 2nd stage heating/cooling on my geothermal system and if the ‘L’ contact was 2nd stage; said RTH6580WF wouldn’t support geothermal systems – asked why as GEOthermal is just a variation of heat pump; asked with my setup 1-5 (heat pump with backup) and 2-0 (orange wire o/b connection heat pump ) when does the ‘L’ (named Y2 conventional system) go active (24Vac) if ever. On current ClimateMaster ATP32U03 thermostat, Yellow is Y1 – 1st stage compressor/cooling/heating and Violet is Y2 -2st stage compressor/cooling/heating with the orange wire ‘o/b’ (slot named W conventional) selecting Cool when high (24Vac). Asked about algorithm for 2nd stage (when – what temperature spread- does L or Y2 go active?)- asked for technical manual – asked for schematic – not available – asked for someone more technical – said he was the one.

For a wifi thermostat the price is excellent. The app is very easy to use and gives you full thermostat control. I do not recommend it because there is no way to lock-out the buttons on the face of the thermostat. With one touch of the system button the heat is turned completely off, meaning a curious child or even an adult who inadvertently contacts the button could turn your heat off and not know it. Yes, the display backlight comes on but the change in setting is already made at that point and the new setting can be easily missed if you don’t stop to read it. This actually happened to me after a few weeks of using it. One night I woke up to a very cold house. Functionally, the unit is fine so if you don’t care about lockable controls then yes, buy it. I think a lockable thermostat cover in a home is crass. To solve my problem I went inside it and put cellophane tape over the system button contacts. When I want to turn the system off I will simply use the app.

Awesome value for Honeywell thermostat that is smart wifi version that access anywhere outside home with internet. Free “Total Connect Comfort” App works on both android and iPhone that has voice active inside app. You also can set up alerts if not keeping temperature. Id for sure buy again as lot cheaper then these more expensive one out there.

This is a really good product at a good price. I set one up for a friend, and then went out and bought one for myself. After it was wired up, the rest of the process–setting zone temperatures and setting up WiFi and the smart phone ap took less than 15 minutes. The app allows you to look at the current temperature and setting as well as the weather forecast. A nice feature is the setting of min and max temps, and if breaches, you get an email. The cons: product support –documentation, phone, and email just sucks. Worse than bad. I’m a mature, retired microwave electrical engineer. I had two simple questions–what power was required from the separate 24 vac transformer, and what was the difference between their jumpered R and RC contacts. Either it was a “don’t know” or a “you need to be a licensed HVAC installer”. My recommendation: make sure you use a dedicated transformer with neither lead grounded. What size transformer? I have no clue, and apparently, Honeywell doesn’t either.