Current thermostat has Rc and Rh, but the nest has only R

[rgaila]

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Original Poster: Kai Lee 9153 

I have separate heating and cooling system, and I see separate wire groups coming from different places. My current thermostat has Rc and Rh wire, I see Rc is for cooling and Rh is for heating. But the nest has only R wire. How do I connect them?

[Charlie18]

I have the same issue....independent heating & cooling.  I'm replacing a Honeywell thermostat which worked well until it broke.

[Charlie18]

I called NEST thermostat customer care.  The Google NEST 6 wire thermostat will NOT work with a dual transformer system.  I was told to use the Google NEST Learning thermostat which allows for dual transformer connection.  I also informed them that the compatibility checker needs to be upgraded to provide clearer selections.

Good luck!

[marcomedio]

Did the Google Nest Learning thermostat work for your separate heating and cooling systems?