Can I use an add a wire on a two wire thermostat system the thermostat is a white Rodgers and I would like to run the furnace fan for ventilation

  • What prevents you from running new thermostat cable? Also, can you link to this "add a wire" gadget you're using? – ThreePhaseEel Nov 5 '17 at 18:28

Yes, as long as you can get an additional wire to the stat location, you can now operate the blower fan independantly. This is with the understanding that the stat has the capability and the furnace is ready for this capability.

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