Is your furnace not working? Before you call a professional HVAC technician, save time and money by trying these simple troubleshooting tips.

If your furnace isn't working, you understandably need to find a solution ASAP. Our experts reveal the most common problems, as well as how to solve them.

A strange, lingering smell could be a sign there’s something going on with your HVAC system. It could be a burning or moldy, rotten smell. Sometimes this smell can be tracked to your air-conditioning ...