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furnace filters
Family Handyman
Before You Call About Your Heat or A/C
Furnace quit? “We always ask, is the furnace switch turned on? You’d be surprised how many times someone in the house accidentally switches the furnace off,” says furnace repairman Bob Schmahl.
If you live in an area with snow and have a furnace that vents out through the side wall, make sure the vent pipes aren’t plugged with frost or snow. Plugged vents cause the furnace to shut off automatically. Once you’ve unplugged the
