When one of my two thermostats died, I replaced both with T9s. The installers advised me not to bother with the added room sensors - but despite the confusing instructions, I included them and they have helped to level room temps. What bothers me most is that they both measure 3 degrees lower than the actual room temperature. I have tracking thermometers placed in each room and they always read 3 degrees higher. True - I can adjust accordingly - but if this is a quality instrument, I shouldn't have to.
Very happy. Had my 4 trane thermostats replaced with these. Game changer! Seamless integration with my ring system as well as ability to connect more sensors to prioritize different rooms
Received notice of current smart thermostat end of life. Researched many different brands. As an individual in the HVAC business Honeywell has always been a reliable name in the industry with a solid reputation.