We replaced a Lyric, which is probably the worst WiFi/app-enabled thermostat one can buy, with this. The sensor to put in another room is a game changer. Honeywell should not sell the Lyric product… they’re lucky I didn’t go with a different brand. The T9 should be everywhere.
these are excellent. easy to install and with the app they are very easy to monitor which was what I needed for a home I am away from. would not hesitate to buy again. I have 12 installed in my house.
The first thing I noticed about the T9 is the simplicity of the screen. You can read the temperature from across the room. I also like the display of the outdoor temperature. Just a tap on the screen displays an up and down arrow to adjust the temperature or set a hold time if you need to override the schedule. The display is bright but you can adjust the brightness during the scheduled “sleep” time. I have a hydronic heating system and each room is controlled by its own thermostat which was hard to manage. Now the app enables me to see each room and adjust as required. My old thermostats were battery powered and required new batteries every year and the seasonal time changes had to be set in seven zones manually. I was able to utilize a spare wire in the bundle run to each thermostat for the C wire to power all of the T9s. No more batteries!
Set up required an HVAC technician because of the C wire requirements. Modifications needed to be made to the circuit board of my HVAC system. The thermostat works well once installed and set up. It does not seem to allow two phones to control the system, so I must rely on my wife to program the days and so forth. The thermostat does save us on our electric bill through a program with our provider.