Humidity Control
Humidity is the amount of water vapor in the air. Low humidity
indicates dry air, too much of which dries out the skin, makes the body
susceptible to frequent colds and coughs, makes you feel cold or
chilled even at relatively high room temperatures, and causes wood to
shrink. Shrinking wood causes furniture joints to loosen, cracks
between crown molding and the drywall, and cracks between boards in
wood floors.
To add humidity during the winter, a device called a humidifier is
installed in your home’s central heating and air conditioning system. A
whole-house automatic humidifier introduces humidity into the home in
the form of water vapor.