To correct a loud banging when the furnace shuts off, locate the offending
To correct a loud banging when the furnace shuts off, locate the offending panel in the duct work and screw a 1-inch-wide metal strip onto that panel in a diagonal position.
To correct a loud banging when the furnace shuts off, locate the offending panel in the duct work and screw a 1-inch-wide metal strip onto that panel in a diagonal position.