Honeywell HONEYWELL TH6220WF2006/U Honeywell TH622

I have two T6 Pro thermostats. ===== UPDATE Both thermostats have completely died. One died about 3 months before the other. I’m not sure what did them in, I assume maybe a power failure. When the first one died, I called Honeywell’s technical support geniuses and after a lot of arguing (they insisted I return it to the store where I bought it, not comprehending I bought it here on Amazon and they should back the warranty) they finally agreed to replace it, but not with a T6. They sent me a refurbished T5. It worked a lot better than the T6, and honestly it was in No Response mode only 10% of the time. Just when I finally set up the new T5, my second T6 died soon thereafter. The average lifespan of these two T6s was like 8 months. After again calling them and pleading with them, they again sent me a T5, which despite being a cheaper and older thermostat works far better. Following is the rest of the old review so you know what you’re in for with the T6. Do yourself a favor and demand they “upgrade” you to a T5. ===== It’s nearly impossible to get these thermostats all the way through the long meandering setup process in this app. Often it fails in the middle of the process, but it ALWAYS fails in the last stages when it’s trying finally to bring it in to Apple Homekit. On the 20th try I finally switched to Home app and pushed the plus button there to bring them in to HomeKit. My thermostats are frequently in No Response mode on the Home app, so they might as well not be in HomeKit at all. It’s impossible to setup any HomeKit automations for the thermostat because it’s nearly always in No Response. It’s basically not really HomeKit compatible, despite that it falsely advertising that it is. But it also is not even Lyric compatible, despite that they also falsely advertise that integration. I understood when purchasing the Lyric product line that these things can integrate together so that you can also control the Lyric thermostats from the Lyric security panel, but apparently that is NOT for the HomeKit versions. Technical support is totally clueless. They will assert stupid excuses why these things don’t work just to make you go away and enjoy your disjointed incompatible devices, but their excuses, like the insane one about disabling your 5GHz Wi-Fi network, are provably false. If you really need to disable the 5GHz network, then that is not a solution but a latent defect, which is why it’s insane they even mentioned it in the year 2021. The description here on Amazon says it takes AA batteries but I can’t find where they go. I don’t think it takes batteries. The instructions don’t mention it at all. I have common wire, but backup batteries would be nice for power failures.