Q. I know I don't know too much about this type of thing, but I do know when something's wrong. And something is definitely wrong with our furnace and air conditioner. I came downstairs a few days ago ...

Moisture problems show up everywhere in HVAC systems. Knowing how humidity behaves in air can make troubleshooting ...

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?

Bob is a service technician who is well trained and nationally certified. However, he sometimes suffers from the same confusion that all technicians occasionally do - the facts that he gathers may or ...

I recently looked at a house that has a brick chimney with mineral deposits on its exterior, apparently the result of moisture condensation inside the chimney. This problem is not uncommon, and may ...

Question: 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 ...