Before you buy

What's the difference between the different Sensi thermostat models?


Sensi thermostat models have different features and different compatibility requirements, depending on the respective model. Check out each product’s specific page to learn more about each model, and their features.

If you aren’t sure what model you’re interested in, you can always check our compatibility tool as well to see what Sensi model works with your current system.

C Wire Compatibility

Some Sensi models require a “C” wire for operation. Other Sensi models may only require a “C” wire if it is controlling a specific type of HVAC system. 

  • Sensi Lite and Sensi smart thermostats: Only requires a “C” wire with the following HVAC systems: heat pumps, heat-only systems, and cool-only systems.
  • Sensi Touch and Touch 2 smart thermostats: Requires a “C” wire for all applications.

Sensi Compatibility Chart

System Type

Sensi Lite smart thermostat

Sensi smart thermostat

Sensi Touch smart thermostat

Sensi Touch 2 smart thermostat

Sensi lite smart thermostat - front

Sensi smart thermostat

Sensi Touch thermostat

Sensi Touch 2 smart thermostat

Conventional Heating and Cooling
         - Gas/Oil/Propane Furnace
         - Air Conditioner
         - Electric Furnace
         - Boiler/Radiant

Yes1

Yes2

Yes3

Yes3

Heat Only
         - Gas/Oil/Propane Furnace
         - Electric Furnace
         - Boiler/Radiant

Yes3

Yes3

Yes3

Yes3

Cool Only
         - Air Conditioner

Yes3

Yes3

Yes3

Yes3

Heat Pump/Geothermal

Yes1,3

Yes3

Yes3

Yes3

Whole Home Humidifiers / Dehumidifiers

No

Yes

Yes

Yes

Communicating/Proprietary System

No

No

No

No

Line Voltage

No

No

No

No

Millivolt

No

No

No

No

RV/Camper 12VDC Applications

No

No

No

No


1 Compatible with multi-stage systems up to 1H/2C or 2H/1C
2 Common wire required for HomeKit compatibility
3 Common wire required 

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