Is this system considered a Dual Transformer system? According to Nest since there is a R and RC cable it must be a dual transformer. But they were unsure and I don't know what that means! I don't have a C wire. Trying to figure out which smart thermostat is best suited for such a setup and hook it up without tearing up much or pulling new wires!
Hope the picture makes sense. I currently have a Honeywell Thermostat with the following wires hooked up.
R, RC, G, Y , W. No jumpers. I have a FirstCO Air Handler, Burnham Heat, and AC unit outside the house.
- Current Thermostat: Honeywell TH6220D1002
- FirstCo Air Handler: 30MBX-3HW 120V-1PH-60HZ
Google did not help me much with the installation or ideas. They said "learning system may work".
Any help would be much appreciated. Thanks