Questioning whether I can use Nest Thermostats.

[SJFox]

I live in a house built in 1968. The A/C system has its own original thermostat. My heating system had two zones until a plumber replaced one thermostat and added a zone. Can I use 4 Nest thermostats?

[Houptee]

Yes you can but you need to look at the wiring that goes to the heat T stats.

How many wires are connected now to each?

Where do the wires connect at the heating system can you post a pic to see if a C common terminal is available at the heating system end.

[Jhonleanmel]

Hey folks, 

Thanks again for helping here, @Houptee. 
@SJFox, I hope you've got the answer you're looking for. If you're still in need of any assistance, feel free to let us know. 

Best,
Mel

[EmersonB]

Hi everyone,

@SJFox I'm dropping by to ensure that everything is covered here. If you have other questions and concerns, feel free to let me know.

@Jhonleanmel and @Houptee I appreciate your response.

Regards,
Emerson

[Jake]

Hey there,

I wanted to check in, and let you know that I will be locking the thread in 24 hours.

Best regards,

Jake