HVAC system compatibility depth

Coverage is broad in the reviews, with one source explicitly listing support for furnaces, AC, heat pumps, boilers, and PTAC systems.

One review says it works with most HVAC systems and explicitly lists gas, electric, oil, and heat pumps.

A comparison review says the new backplate expands compatibility and that the thermostat works with most HVAC systems.

One review says it works with most 24V gas, oil, heat pump, electric, forced-air, and conventional HVAC systems.

Compatibility is described as broad across common HVAC systems and even a boiler setup, but one comparison says the Premium is better for more complex dual-fuel or accessory-heavy wiring.