A whole house humidifier is a device that connects to the central air system and cools incoming air, forcing moisture to condense and drip into a drainage pan. The air then passes over a warm coil, heating it back up to a comfortable temperature as it passes through the ducts.
Excessive humidity in the home can lead to a host of problems. Mold and mildew can occur when condensation keeps walls and furnishings damp. Many dust mites and other pests also thrive in humid conditions, and reducing the available moisture in the air can drive them out. In the winter, excess condensation on windows can freeze, leaving a glaze of ice on the inside of the pane. A whole-house humidifier can help control these problems or keep them from occurring at all.