Thermostat Wire Color Codes You Need to Know AireServ

Thermostat Red Wire. Trying to install A smart wifi Thermostat I got an old Rheem You may also have Rc or Rh terminals for dual transformer systems; these are special. Alternately, taking a photograph can be very helpful

The red wire (R wire) is your power wire that connects to the transformer in your heat pump or AC to power the thermostat Orange - This wire connects to your heat pump (if you have one)

Simple 2 Wire Thermostat Wiring

You may also have Rc or Rh terminals for dual transformer systems; these are special. If that's the case, the thermostat will have RH wires (heating power) and RC. Alternately, taking a photograph can be very helpful

Simple Thermostat Wiring Guide (2,3,4,5,6,7,8 Wires Color Code). Attach the Red wire to the R terminal for 24V Power Homeowners with geothermal heat pumps can disregard the orange wire

What are the bottom right red and white wires controlling? Both those. One is for cool and the other is for heat, hence the abbreviation "RH" and "RC" All air conditioner thermostats have a red wire for power