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Is my thermostat compatible the nest thermostat?

Community Member

Hello all I just try to find out if I can use the nest thermostat, there some wiring letter that I can not find on the nest thermostat.

thanks for any help!



Platinum Product Expert
Platinum Product Expert

Your thermostat is what we call a proprietary digitally communicating thermostat. It uses AV communications protocol based on RS 485 and it digitally talks to the control board. It unfortunately is not compatible with a nest. learning thermostat. In fact it’s not compatible with any thermostat other than the ones manufactured by the HVAC equipment manufacturer it is attached to. 

However, most of those systems are designed to work, not only with the proprietary system, like the Carrier ION, but with traditional thermostats too.  You would however have to run a new cable between the thermostat location and the equipment and that cable would need to have 6 to 8 conductors inside. I hope this helps you to understand.

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.

Thank you very much for your explanation!

Community Specialist
Community Specialist

Hey there,


Thanks so much Ken for the help.


I wanted to check in and see if you had any questions from here. Please let me know, as I would be happy to assist, and answer any you may have.

Best regards,

Community Specialist
Community Specialist

Hello Hellofresh,


I know it has been a while, but we wanted to ensure that everything is covered here. Please let us know if you have any other questions or concerns.




Hi Hellofresh,


I'm checking in to make sure that you've seen our response. If you have any further questions or concerns, please let us know before we lock this thread in 24 hours.