Does the newest nest thermostat work with duel fuel system ?

[ianz]

Hi 

I have a nest thermostat (the mirror surface one ) , is it possible to use one thermostat to control both the gas boiler radiant heat and air condition system(duel system )?

[Patrick_Caezza]

What you are referring to sounds like a dual transformer system with which the Google Nest Thermostat is incompatible. The only Nest thermostat that is compatible with a Dual Transformer system is the Nest Learning Thermostat, 3rd Gen.

Here is a table showing what is compatible with each type of Nest thermostat.

https://support.google.com/googlenest/answer/9246656?hl=en#zippy=%2Csystems-that-are-nest-compatible

[ianz]

Hi Patrick , 

I mean I have two system with different heating sources , electric and gas ,like the gas one is for heating and the electric one is for cooling .  Is it what you mean for the dual transformer system ? 

thank you 

[Markjosephp]

Hello folks,

I wanted to ensure that everything was covered here.

Thanks for the input, @Patrick_Caezza.

@ianz, in addition to what was mentioned by Patrick_Caezza. If your system has a heat pump with an auxiliary heat source, you’ll be asked if your system is dual-fuel or single-fuel. So if you have a dual-fuel system, you might need to have a trained professional set up your thermostat. But if your system fits the description in the article shared above, it should work with the Nest Thermostats.

Feel free to let us know if you have more questions in mind.

Regards,

Mark

[Jake]

Hey there,

I wanted to check in. Please let me know if you have any questions from here, as I would be happy to review.

Best regards,
Jake

[EmersonB]

Hello everyone,

@ianz, just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, we would be happy to keep it open. If there's more we can do, just let us know.

I appreciate the help, Jake, Mark and Patrick_Caezza.
 
Best,
Emerson