The Amazon Smart Thermostat is a white, square-shaped device that measures 3.5 by 3.5 by 0.8 inches (HWD). It supports most 24V forced air, heat pump, and radiant boiler HVAC systems, but doesn't ...

The very affordable Amazon Smart Thermostat lets you control your heating and cooling system from your phone or via Alexa voice commands. Editors' Note: This is the most recent version of the ...