Q: I have an air-conditioning unit in my attic, and it is leaking a lot of water vapor into the attic. The ceiling of the attic is covered with mold all over, not just above the air-conditioning unit.

SPACE MATTERS: “Usually, a unit in a conditioned space is optimal,” said Mike Antonucci, manager of Advanced-Air in Fort Myers, Florida. “If it is in an attic or garage, it has to work harder, and it ...

Changing your home’s air conditioner filter is one of the easiest ways to save money and improve air quality, all in just 10 ...