Goodman furnace won't kick on...
Outdoor temperature under 30degrees our furnace will not kick on. However when "steam" from boiling water or running hot shower fill the furnace area it will kick on. Run until house gets to temp set on thermostat. What could be causing this... Asked few techs' one said a seņor another thermostat. One company says never heard of such a thing. The guys that installed unit pretty much have been useless... have been relying electric space heaters.
Any input would be much appreciated!
Thank you