topic Re: Nest Compatibility in Nest Thermostats

Nest Compatibility

Orange602 — Fri, 27 Feb 2026 21:50:36 GMT

Hello, I recently purchased an older home with 2 thermostats (both older, but one super old). I used the nest compatibility checker and it ended up telling me to submit pictures for both thermostats, so I figured I would try posting them here. I was wondering if either of these thermostats would be compatible with a nest system.

Thermostat 1Thermostat 2

Re: Nest Compatibility

CoolingWizard — Sat, 28 Feb 2026 00:07:56 GMT

@Orange602 ,

Looks like you have a couple of Heat Pumps the second older one might have emergency heat. How comfortable are at going to the Air Handler and taking front panel off?

The Cooling Wizard

Re: Nest Compatibility

Orange602 — Sat, 28 Feb 2026 00:29:19 GMT

@CoolingWizard

I'm comfortable enough to take a crack at it.

Re: Nest Compatibility

Patrick_Caezza — Sat, 28 Feb 2026 04:21:47 GMT

@Orange602

Give these a try

Top

Red - RC to Rc (jumper to R not needed

Orange - O to OB

Yellow - Y to Y1

White - G to G

Blue - B to C

Bottom

White - W1 to W1

Black - X to * (set as Emergency heat)

Blue - Y2 to Y2

Yellow - Y1 to Y1

Red - Rc to Rc (jumper not needed)

Brown - W2 to W2