Showing results for 
Search instead for 
Did you mean: 

Lennox Elite X4146 Connection to Nest Learning

Community Member

My current thermostat has R O G B Y and W connections.
Will my Nest Learning thermostat work and how should I connect?


Silver Product Expert
Silver Product Expert

The best way to start. This is to go to the Nest compatibility checker. But basically I can tell you that your thermostat can be supported with a nest thermostat or a nest learning thermostat. In all likelihood, the wire that is attached to the B terminal is your Power Common. The nice thing about the Nest installation process, is, it will guide you on how to mark the cables, and move them to the nest.

The AC Cooling Wizard

NestPro and HVAC company owner

I’ll give it a shot and see what happens-thanks!

Community Specialist
Community Specialist

Hey folks,

We appreciate your help here, @CoolingWizard.
@BeC2, I wanted to follow up and see if you are still in need of any help. Please let me know if you are still having any concerns or questions from here, as I would be happy to take a closer look and assist you further.


Hey there,

Checking back in should you still have some questions here. Let us know by replying to this thread. 


Hi everyone,

Just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, I would be happy to keep it open. If there's more we can do, just let me know.