I have a new Lennox G61Mp-48C furnace. It is a 2-spped unit. If it has been running at high speed and the thermostat has reached it's setpoint, aand the motor is switching form high to low speed we hear a bang much like ductwork flexing but it seems to be coming from the furnace cabinet and not the ductwork. Ideas?
Lennox Furnace 2-Speed Noise
Jan 20, 2007
6 Replies
hell yes I got ideas.
Some of them are even good ones!
Well it's pretty simple, find the duct thats banging and support it.
-Canadian Heat
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Did you not read his original post?
He stated "seems to be coming from the furnace cabinet and not the ductwork."
You're forgetting. The simple minded Canuck f***er cant read nor understand English. Bubba
Well hell. They only have one letter in their alphabet, EH?
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