Pay attention to furnace smells. A metallic or burning odor could mean overheated electrical components. A musty smell ...

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 ...

In this month’s troubleshooting situation, you’re responding to a customer’s complaint that his furnace isn’t heating properly. The equipment is an 80 percent AFUE, natural gas, induced draft unit ...