It’s a solid thermostat. The software is solid, but could use some additions. Primarily a dynamic control that allows the t-stay to set a temp range within a set of degrees of he outside temp. It already has a connection to the location and weather, it’s just one more step.
This little thing does what it should. Controllable from my smart phone, being able to adjust temp at night and then schedule it for a two decrease right before I wake up. It’s awesome !!
Thermostat works great, but the installation process is very complicated. Like others have mentioned, I also needed to get technical support to help. Could not complete installation myself, and neither could my electrician. First level of help from Honeywell support could not help after being on the phone with them for 90 minutes. They referred me to an elevated help desk, who was supposed to call me back. Three days later, I got an email from them telling me they fixed the problem. It was indeed fixed, and is working great now.
Will never recommend the T6 or any other thermostat from this brand if you expect it to work as a smart thermostat that you can control through WiFi. Had zero issues for the first year and it was always working as expected. But since this transition to Resideo, I have probably been able to connect to it through the App only 10% of the time. Almost always because of issues at the Resideo end. Horrible experience overall.
No Deadband. So your A/C runs on compressor cycles per hour. While your A/C may run for less total time it is running more start cycles which is hard on electric motors.