Patent ID: 8720080

Claim:
An apparatus for drying a room, the apparatus comprising: a first duct comprising a first end arranged to receive ambient air from outside the room, a second end arranged to output air into the room, a valve positioned between the first and second ends, and an inlet air circulation fan positioned between the valve and the second end; a second duct comprising a first end arranged to expel air from the room, a second end arranged to draw in air from the room and an outlet air circulation fan positioned between the first and second ends; a heater arranged to heat the air within the room; and, a first humidity sensor arranged to detect a level of humidity in the room, wherein the apparatus is configured to operate in either a re-circulating mode or an exhausting mode, wherein when the level of humidity within the room is less than a predetermined level of air humidity the apparatus is operated in the re-circulating mode whereby the valve is positioned to block entry of air from outside the room while permitting entry of air from within the room into the first duct, the inlet air circulation fan is circulating air and the outlet air circulation fan is not circulating air, wherein when the predetermined level of air humidity is reached the apparatus is operated in the exhausting mode whereby the valve is positioned to permit entry of air from outside the room while blocking entry of air from within the room into the first duct, the inlet air circulation fan is circulating air and the outlet air circulation fan is circulating air.