topic Nest Thermostat wiring compatibility in Nest Thermostats

Nest Thermostat wiring compatibility

kevinhac — Thu, 27 Mar 2025 03:17:32 GMT

Hello Al,

Want to get some help with wiring compatibility with Gen4 Nest Learning Thermostat.

My current Thermostat has the wiring below

Y O/B

G W

C R

Will this work with the Gen4...?

Thank you

Kevin Nguyen

Re: Nest Thermostat wiring compatibility

Patrick_Caezza — Thu, 27 Mar 2025 05:05:01 GMT

@kevinhac

Can you post a picture of the current thermostat's wiring here?

Re: Nest Thermostat wiring compatibility

sicsacol — Sun, 30 Mar 2025 18:28:03 GMT

Hi folks,

Thanks for posting in the community.

@Patrick_Caezza, thanks for your help in this thread.

@kevinhac, I understand you'd like to know if your system is compatible with your Nest Thermostat 4th generation. Don't worry, I'm here to help.

Based on your information, it seems that you have the necessary wires to make the Nest Thermostat work. However, to better assist you, please confirm what type of HVAC system you have. Also, please let me know if you have a C wire connected or not. To learn more about this, you can check out the following article: Compatibility Checker.

Any additional details you can provide will be helpful.

Cheers,
Jonathan