The last thing anyone needs is for their furnace to start blowing cold air — especially in the winter. But what causes this problem, and how can you fix it?

Changing your furnace filter on a regular basis is one of the easiest and most inexpensive things you can do to maintain your furnace and household air quality. “It’s a clinker! That blasted, stupid ...

There is nothing worse than waking up in a freezing house in the middle of a cold winter’s night — except maybe, knowing you’ll have a big, expensive furnace bill to pay later that day! But don’t fret ...