I have a thermostat that allows a setting for fan only, which I wish to try to try to push some air around during the warm weather. There is no AC. Furnace is 1960's vintage, and had only two wires to the thermostat. I added a C wire for the smarter thermostat. If I add a FAN wire, will the old furnace have a place to hook it up and respond appropriately?
- posted
6 years ago