topic Re: Can you hook up to one nest thermostat in Nest Thermostats

Can you hook up to one nest thermostat

JamesD11 — Thu, 02 Dec 2021 00:02:31 GMT

Can you hook up to one nest thermostat to , two separate system IE ( AC unit has ducts , Oil fire furnace is baseboard radiators , To operate thermostat wires to one nest thermostat ?

Re: Can you hook up to one nest thermostat

laurentbourg — Thu, 02 Dec 2021 00:44:13 GMT

Yes you can, with a Nest learning thermostat 3rd generation.

Re: Can you hook up to one nest thermostat

JamesD11 — Mon, 06 Dec 2021 03:05:21 GMT

What is the wiring diagram for that , as right now it doesn't work
Thank you

Re: Can you hook up to one nest thermostat

laurentbourg — Mon, 06 Dec 2021 03:55:34 GMT

Please upload a picture of your old thermostat wiring as well as your Nest wire plate wiring

Re: Can you hook up to one nest thermostat

JamesD11 — Sat, 18 Dec 2021 01:31:17 GMT

Two stat wires 18/2 from heat red to R , white to W on old stat

Second stat wire 18/4 coming from Air handler in attic Yellow to Y , Green to G , Red to RC , White to W on old stat , There were two thermostats , one for Heat and one for AC .

So how would this be wired on one Nest learning thermostat ?

Right now on new nest stat White is to W and Red is to RH , only heat is hooked up now , on nest stat .

Thanks James