2 wire thermostat

[SamTheMan24]

Hello everyone, I have a separate thermostat for heat and one for AC.. I’m trying to get a new thermostat for the heat but I only have 2 wires coming out they were attached to Rh and W/B with a junction between Rh and Rc. I was wondering if the Nest thermostat is compatible with my wiring and if not what to do? Thanks in advance 

[jenniffert]

Hi SamTheMan24,

Thanks for posting here in the community! I'm happy to assist you with the compatibility of Nest thermostat models with your two-wire heating system!

As you've indicated that you only have two wires, one for heating and one for power supply, a jumper wire between the RH and RC terminals is not required for Nest thermostats. For further information, please refer to this helpful article: Learn about thermostat jumper wires.

To determine if a Nest thermostat is compatible with a two-wire system, it depends on the specific model. If you choose the Nest Thermostat, you may need a C wire or a Nest Power Connector for compatibility. For the Nest Learning Thermostat, a wider range of systems is compatible. However, there are situations where the system might need a Nest Power Connector or a C wire to ensure consistent power delivery. For more information, please refer to this article: Learn about the common or C wire.

For more information on Nest thermostat compatibility, please refer to this article: Nest thermostat compatibility.

Let me know if you have more questions.

Best regards,

Jenniffer