Imagine: It's the middle of summer and your air conditioner is working overtime to keep your home cool and comfortable.

If you notice water on the floor around your high-efficiency furnace, don’t panic. It could just be a clogged condensate line, a common problem caused by a buildup of sludge in the pipe. While it is ...

Q: My furnace is in my attic, and I recently had insulation blown in. Ever since, the air-combustion vent on my furnace is sweating and causes the ceiling to get wet. How do I stop the condensation?