How do I wire and install my thermostat?

The Sensi app provides all the installation instructions for wiring your new thermostat. 

• Download the Sensi app on your smart phone or tablet. 
• Create an account or sign in.
• Tap the + sign.
• Tap your Sensi product.
• Tap "New Installation"
• Tap “Not Mounted”.
• Follow the in-app setup and wiring instructions.

You can also learn more by downloading your Sensi's Install Guide. A detailed wiring diagram for your specific model is included at the end of the install guide for terminal designation and references.

If you want to check to make sure the HVAC configurations are correct after installation, refer to this article for instructions on how to configure thermostats.

Notes:

• Sensi thermostats are not compatible with line voltage systems. A line voltage thermostat will typically have wires larger than 18 gauge and may not have terminal labels. If you’re unsure of your system voltage, you or a contractor should measure voltage using a multimeter. Sensi thermostat is rated for 20-30 VAC.
• If your old thermostat has wires attached to the following sets of terminals, the Sensi thermostat is not compatible with your system:
  • 1, 2, 3, 4
  • A, B, C, D
  • V+, VG, RS-, RS+
  • R, 1, 2, C

Refer to our system compatibility checker to see if Sensi thermostats will work for you.