Compatibility check?

[jonnyi]

Hi everyone, will a nest thermostat be compatible with only W, Rh and Rc wires? Jumper between Rh and Rc. Appreciate any help!

[listairee]

Hello @jonnyi,

Thanks for reaching out. Please use the following compatibility checker to check if your system is compatible with Nest thermostats: Compatibility Checker. 

Hope that helps!  🙂

[Houptee]

The system you have is heat only so you would connect Red to Rh and White to W (ignore the jumper to Rc it is not needed on any modern smart thermostats).

The problem is you need a C wire for common if you have the Nest non learning.

The Learning model sometimes is ok without a C wire.

You can either run a new 8 conductor cable to the furnace, or use a Nest power adapter device but I suggest running the new cable if possible.

[zoeuvre]

Hi everyone,

@jonnyi, thanks for posting here in the Community. How's it going with your Nest Thermostat? Were you able to read the information that listairee and Houptee has shared? In case you have an update, let us know and we'll be happy to help.

I appreciate the help, @listairee and @Houptee.

Best,

Zoe

[zoeuvre]

Hey folks,

Before I mark things as resolved I wanted to check in and see if there might be anything else you needed on this or to see if you had any other questions. If there's more you need, just let us know.

Thanks,

Zoe

[jonnyi]

All set, thanks for checking!

[zoeuvre]

Hi jonnyi,

Nice! I'm glad to hear that evrything has been sorted out. In the meantime, I'll go ahead and lock this thread within 24 hours. If you run into any more issues in the future, please feel free to create a new thread.

Regards,

Zoe

[jonnyi]

Thanks! This is the answer I needed!