Hey demdevils85,
Thanks for reaching out and for the photo of your current thermostat wires.
Do you have a dual fuel system? This is also called a hybrid or packaged system which is a combination of a heat pump for primary heating and cooling, and a furnace (usually gas or oil) that provides a second and/or third stage of heating.
If you do, our Nest thermostat is compatible with these systems but you will need to have a trained professional set up your thermostat. It is important for a professional to assess the requirements for your specific dual fuel configuration since choosing incorrect options for a dual fuel system can result in damage to your system. Contact a local pro.
Best,
Melba
