This was one a few thermostats that have remote room sensors. This is why I bought it. It works well enough, but the phone app occasionally loses connectivity. At that point I have to go through a complicated procedure involving chat with technical support in order to get everything reset. This is a major pain in the rear-end as it happens two or three times a year. Given a choice I would not purchase this again. Also, the app is not particularly user-friendly in regards to customization.
While I like the unit and that it runs on HomeKit it keeps renaming my house in HomeKit which it shouldn't do and is very annoying. Also the screen doesn't dim like its supposed to. Stays bright all night.
Outstanding product and was absolutely more than I expected. I'd been hearing from the wife for quite sometime about the bedroom and main bath being warmer from the rest of the house. A mini split was suggested and my response was out of the question. Buddy of mine at work was telling me about the Honeywell T9 and the sensors. After some youtube "homework", I decided to get one. Got it home, installed it and set it up. We placed the sensor in the bed room and I programmed the schedules etc. After about 4 hours and much to my surprise, the house had "equalized". The T9 is in the hallway and the sensor in the bedroom is clear across the house. Additionally, the rest of the house was not considerably cooler than the priority room. I cross-checked the sensor and the thermostat with a fairly expensive digital HVAC thermometer and it was within .2-.4 degrees. Needless to say the real test would be the wife. After a week, I inquired and the results were..."I like it and can see a difference".
Extremely disappointed. I should probably take it back. Logistically painful that I can’t effectively set a schedule without geofencing. There are multiple members of my family and geofencing my phone alone is short sighted.
The Resideo app is absolutely awful. It constantly logs me out. I’ll change the temperature on my phone and it takes forever to it to actually come on.
I previously had the Honeywell Lyric Round thermostat. It came with my home new in 2018. The Lyric Round failed in 2022 and I replaced it with this. It works great. The reason I rate it 2 star is because it clicks very often. I don' ever remember the Round clicking. This T9 emits clicks when turning on or off the unit