The Environmental Protection Agency (EPA) lists poor indoor air quality among its top environmental health threats. There are three key components to healthy air. It must be fresh, clean, and have the proper humidity.
• Fresh outside air is rich in oxygen and flushes your home of stale air, which can be full of harmful airborne pollutants.
• In order to have clean air, it must be filtered to remove particles, airborne allergens, and other harmful particles.
• ASHRAE recommends keeping the Rh (relative humidity) in a home between 30 and 60%. Maintaining relative humidity below 50% may reduce mold and mildew growth.
The United States has a variety of climates and often it seems difficult to know if dehumidification is necessary. Any region with a summer dew point average of 55° can benefit from dehumidification separate from the cooling system.