Place this safe, effective mildew fighter in any enclosed space to get rid of mildew, mold and condensation in your boat. Cool, damp air is drawn in through the bottom base panel and then is heated and released through the top vents. Uses natural convection to circulate the air so there is no need for switches, thermostats, or fans. The Air Dryer plugs into any 110/120-volt outlet and draws only 70 watts, .6 amps. Safe to leave unattended and will not spark.