Red or “Rc” Wires Red wires, specifically Rc wires, are responsible for 24-hour volt AC power from your transformer. Rc wires are only for air conditioning systems or dual transformer systems. Dual transformer systems refer to a setup with a cooling and heating transformer.Feb 4, 2020
What is the white wire on a AC unit?
The white wire underneath your thermostat connects to your heating system. It terminates at your air handler or furnace. The white wire connects to terminal W in industry-standard thermostats.Feb 4, 2020
What color is furnace C wire?
Blue
What is the red wire on a furnace?
Red or “Rc” Wires Red wires, specifically Rc wires, are responsible for 24-hour volt AC power from your transformer. Rc wires are only for air conditioning systems or dual transformer systems. Dual transformer systems refer to a setup with a cooling and heating transformer.Feb 4, 2020
Where does the red and white wire go on a thermostat?
Most two-wire thermostats wire have a red and white wire encased in a brown insulated coating. Strip the red and white wires back about 1/4 inch at both the thermostat and the furnace ends. Connect the white wire to the "W" terminal on the furnace and thermostat.May 20, 2021
Where does the red and white wire go on furnace?
Thermostat Color Coding Connect the white wire to the "W" terminal on the furnace and thermostat. Repeat this for the red wire, connecting it to the "R" terminal on both the furnace and thermostat.May 20, 2021
What wires should be connected to a furnace?
- Red wire for power (24V).
- White wire for heating (connected to W or W1 terminal).
- Green wire for fans.
- Blue or yellow wire for cooling (connected to Y).
- Black wire for “C” or “Common” wire.