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Nest Minimum Voltage requirement

Woody56
Community Member

Can anyone tell me the minimum Voltage(VAC) for the nest thermostat??

I have two...One has 30Vac(Nest measured) and the other has 19Vac(also Nest Measured)

The one with 30Vac is working fine, but the other(19Vac) seems to work fine, but indicates that the voltage is insufficient in the App, but no error on the nest itself.

 

Thank you

7 REPLIES 7

Jeran
Community Specialist
Community Specialist

Hey there Woody56,

I apologize about the late response, thank you for being patient! If you check out this article on Nest Thermostat compatibility, it states that Google Nest thermostats are designed to work with most 24 V systems, even older systems. They work with all common fuel types including natural gas, oil, and electricity. 

30 V would work just fine, while the 19 V may not provide enough power to keep the thermostat's batteries charged.


I look forward to your response, and if you have any other questions or concerns for me, please let me know!

Best regards,
Jeran
 

Woody56
Community Member

Thank you for your response. I will monitor the functions of the thermostat and let you know if it is sufficient in my case. In the meantime, I will see about installing the power connector/Adapter.

 

Thanks again

Steve

Jeran
Community Specialist
Community Specialist

Hiya Woody56,

 

No problem at all! I'll leave the thread open for a few days, then check back to see if you have any more questions.

 

Best regards,

Jeran

EdwardT
Community Specialist
Community Specialist

Hi Woody56,

 

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 trouble from here, as I would be happy to take a closer look and assist you further.

 

Thanks,

Edward

EdwardT
Community Specialist
Community Specialist

Hey Woody56,

 

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,

Edward

Woody56
Community Member

Hi Edward

 

Thanks for the help...I think I'm all set now...Going to install a 24 Vac Xformer and an interposing relay...That'll do it.

 

Thanks

Woody56

EdwardT
Community Specialist
Community Specialist

Hi Woody56,

 

Thanks for the update. I'll be locking this thread in 24 hours. Feel free to create a new one should you have some more questions or concerns in the near future and we'll be more than glad to help.

 

Thanks,

Edward