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I only have 3 wires red green and black , can i use nest thermostat with this wiring (no yellow )

Sherinpi
Community Member

I only have 3 wires red green and black , can i use nest thermostat with this wiring (). Dont have AC. No yellow wire

4 REPLIES 4

CoolingWizard
Platinum Product Expert
Platinum Product Expert

You need to upload a picture of your thermostat and the wires.  We need to know the terminal labels each wire is connected to. People need to understand that the color of the wire makes absolutely no difference as to the function it controls.  You say you have three wires, What thermostat terminal letter does each of the three wires connect to? 

Ken, The AC Cooling Wizard 

NestPro, Google Pro, Mechanical Engineer and HVAC service company owner.
If my answer solved your problem, click Recommend this Answer below, and If it helped you, please give a Kudo.

Hey folks, 

Thanks for lending a hand, @CoolingWizard.
@Sherinpi, 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.

Thanks,
Mel

Hey there,

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

Best, 
Mel

Hi everyone,

I'm just checking in to make sure that you've seen our response. Please let us know if you have any other questions or concerns as I will be locking this in 24 hours.

Thanks,
Mel