Showing results for 
Search instead for 
Did you mean: 

Not sure if my wiring is compatible with Nest E thermostat

Community Specialist
Community Specialist

Disclaimer: This thread was migrated from our previous version of the Google Nest Community. You can continue to receive updates on your thread issue here or simply ask, browse or more in the new Google Nest Community.

Original Poster: John SPARTAN 

Unsure if my wiring is compatible with Nest E thermostat


Community Specialist
Community Specialist
Hi John, 
Welcome to our community and thanks for reaching out to us! We're happy to hear that you're considering a Nest Thermostat for your home. Let's see what your wires mean. 
It looks like you have the right wires for the Nest Thermostat. Here's my decoding: 
  • W2: secondary heating (e.g., furnace, dual-fuel, or multistage systems) 
  • W/E: emergency heat wire 
  • Rh and Rc: heating and cooling 
  • Y: cooling 
  • G: fan 
  • C: C-wire, which is important to maintain a consistent charge for your thermostat to function properly. 
However, depending on if your HVAC system is either multistage or dual-fuel,  contacting a Nest Pro is necessary to prevent any damage during installation as these wiring setups can be notoriously tricky. 
Our Compatibility Checker is a great tool to see if your system is compatible. If you decide to get a Nest Thermostat, the Nest app can also assist with installation as it will provide a custom wiring diagram for your device. 
I hope this helps! Let us know if you any further questions for us. 
-From Ai, Community Specialist.