If you were to let unfiltered air into your furnace, its performance would suffer as dust settled on the heat exchanger and other parts, and that would reduce the service life of your most important ...

Part of any home maintenance schedule should be to change the furnace filter regularly -- and particularly as the winter heating season gets under way. But which is better for your furnace and your ...

Part of any home maintenance schedule should be to change the furnace filter regularly -- and particularly as the winter heating season gets under way. But which is better for your furnace and your ...