Why is indoor air so humid?
Indoor humidity is caused by everyday living. Showers, baths, cooking, washing dishes, doing laundry, and cleaning all add moisture to the air in your home — as much as four gallons or more per day in some homes. Additionally, we exhale moisture into the air as we breathe. Today’s energy-efficient, well-insulated homes tend to keep down heating and cooling costs. But the same things that block outdoor air from entering our homes also keep moisture from venting to the outdoors.
