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 ...

In this situation we have a customer who has called for service on their gas furnace, and the description of the problem is “no heat at all.” The customer also reports that this is the first time they ...

Freezing, frosty, frigid are all perfect words to describe typical Northern winter weather. If they describe the inside of your home, however, chances are excellent that 1) there is something wrong ...

The last thing anyone needs is for their furnace to start blowing cold air — especially in the winter. But what causes this ...