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View Full Version : What are 2 red and 2 white wires coming from gas furnace

avgarg
Jan 25, 2009, 11:22 AM
What are 2 red and 2 white wires coming from gas furnace
cakesbyellen
Jan 25, 2009, 11:37 AM
Your furnace needs a thermostat to tell it to kick on and it also needs electricity to key the igniter to light the gas. These are usually the two wires.