Had a new HVAC system recently installed. It came with a T6 Pro Smart Thermostat. Setup was easy and simple with smart phone and WiFi. Love the back-lighting control and use it as a nightlight in the hallway. Once connected via WiFi, all other setup and programming has been done via the phone app. Excellent control and ease of use.
The HomeKit service on this thermostat is really unreliable. My builder put in two of the T6 Pros, and they basically take turns being "No Response" from HomeKit. My UniFi Wi-Fi controller always shows both as connected with strong Wi-Fi signal. Pulling them from the wall and plugging back in fixes it, but not for long. Need to do this every week or so.
I bought this after trying another brand. We had just had a new Bryant AC installed and wanted a thermostat that we could adjust remotely. This thermostat does all that I wanted and needed. Highly recommend.