For two years T6 has been communicating with Resideo App. Now the two no longer communicate. This has been tested on two different networks. Honeywell provides no means to send electronic communications (i.e., e-mail) to support. I would not recommend this company's products.
This thermostat can run two heat sources (heat pump and propane boiler), depending on the outside temperature. It requires an outdoor temperature sensor to be installed so it can switch heat sources, but it will not display the temperature sensed by that sensor, which makes no sense. Similarly, when it switches to the alternative heat source, it does not display that it has done so, which also makes no sense. So it could be more user friendly. Apart from these shortcomings, however, it seems to do a decent job.
My t6 died after a year and honeywell dont want to warranty it because i installed it myself. They want me to return to the guy who sell it to me but he dont want to warranty it because he didn't installed it. Dont buy honeywell product they dont back there 5 YEAR warranty. 30min chat for nothing. It would have been so easy to just send one back to me!!
No, I would not recommend this to a friend.
Response from resideo.comBy Joey, Customer care, November 16, 2023
Hi, we're sorry to hear you experienced this with your unit. The warranty on our professionally installed models is processed through the Hvac installer. We appreciate the feedback and will utilize your comments.
Our builder installed two of the T6 Pro Smart Themometers when we built our house two years ago. In the two years, the app/device stayed connected to Wi-Fi for less than one month total. Meaning we cannot control our thermostat remotely or even if in the house; we have to physically get up to set or change. For the price; this is a JOKE. The technology is absolutely horrible; the apps don't work either. Resideo, HoneyWell Home, etc.
No, I would not recommend this to a friend.
Response from resideo.comBy Maria, tech support, November 20, 2023
Hi SpsFamBam, we are truly sorry to hear about this. Please make sure that you have a 2.4 GHz only network to maintain connectivity with your T6 thermostat. Our Support Center link at the top of the page has all the ways you can get in contact with us to discuss where the issue may be.