Smart thermostats aren't cheap, but they're worth the investment and often pay for themselves, But right now you can get a Honeywell T5+ ...

Honeywell announced that their WiFi thermostats support Google Home and Assistant. The thermostats that support Google Home include the Lyric Round, Lyric T5, Lyric ...

Google Assistant now works with Honeywell thermostats and Belkin Wemo smart devices to help further automate your home.