Nest thermostat functions

[Charles57]

I have 2 heating and cooling systems in my home. I’m trying to figure out if Nest Thermostats talk to each other in such a way as to not run at the same time thus pulling less amps overall. I have solar panels and don’t want my meter to draw power from the grid if I can avoid it. Does someone have an answer???

[CoolingWizard]

@Charles57 ,
The Nest thermostats do not communicate with each other in a power sharing kind of mode. Each HVAC system is an independent system and are controlled independently.  Now there is way that an HVAC contractor can make that possible.  You would need to install a combination relay which has N.O and N.C. Contacts.  It would be wired to the primary HVAC a system in such a way that if the Y/Y1 wire is activated for cooling, it would also energize the relay and remove Y circuit form the secondary unit.  When the primary unit is satisfied, the Y wire would be de-energized and relay would open and the second unit would then be able to activate the cooling.

AC Cooling Wizard

[Jake]

Hey Charles57,

Thanks for the help CoolingWizard.

I wanted to check in and see if you managed to see CoolingWizard's post. Please let me know if you have any questions from here. I would be happy to assist, and make sure you are good to go.

Best regards,
Jake

[Jake]

Hi Charles57,

I wanted to check in and see if you are still in need of any help. Please let me know, as I would be happy to assist, and answer any questions you may have.

Best regards,
Jake

[Markjosephp]

Hello there,

Thanks for your assistance here, Jake.

@Charles57, I'm checking in to make sure that you've seen our response. Please let us know if you have any additional questions or concerns before we close this thread in 24 hours. 

Regards,

Mark

[Charles57]

I got my answer. Thank you guys 

[Markjosephp]

Hello Charles57,

Awesome! I'm glad to hear it was sorted out. It looks like we can consider this one complete, so I will lock the thread within 24 hours. Feel free to create a new thread if you need more help.

Thanks,

Mark