In addition to mold, Keister says to scan the coils, if possible. They should never appear rusty. Power cords should have no ...

Use the same maintenance steps we show here. If your furnace looks different from the one shown or you have a heat pump, use the owner’s manual to find your way around it. The basic parts will be the ...

Almost all homes built in the U.S. have air conditioning of some type. In many cases, it’s part of a heat pump system that ...