Is my thermostat wiring compatible with Nest?


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Old 11-05-17, 10:06 AM
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Smile Is my thermostat wiring compatible with Nest?

Hello Everyone,

This is my first post here. I am writing to ask if anyone knows if this thermostat wiring is compatible with Nest. I am having difficulties in matching the wires tags to the ones that are on the Nest.

The wires appear to be stranded but I can easily wire nut those on solid

Any help would be greatly appreciated.

Thank you

Cheers!

Matt

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Last edited by PJmax; 11-05-17 at 10:38 AM. Reason: cropped/enlarged pic
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Old 11-05-17, 10:35 AM
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Welcome to the forums.

Normally we need to know more than just the wiring colors but in this case I can see what you have. You have a self contained type system like a PTAC. Those units use a 120v thermostat which is what is in your picture. Therefore the nest is not compatible with your system.
 
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Old 11-05-17, 05:01 PM
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Thank you for your reply Pete,

Do you know any way to make it compatible or any "smart" thermostat that can be used with a 120V system?
The actual thermostat is quite old and not very efficient.

Thank you!
 
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Old 11-05-17, 05:05 PM
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The nest could be used with several relays to interface with the system. I'd recommend finding a tech to that.
 
 

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