The ComfortDry 400 Natural Gas Dehumidifier has been field tested for five years and is now ready for the residential market. The mechanics behind the process is relatively simple.

Operation of the desiccant dehumidifier is based on two counter-current air streams flowing through the wheel. Air from the conditioned space is drawn through the rotating desiccant wheel. The desiccant absorbs moisture from the air stream and the dry air is returned to the conditioned space. The moisture-containing portion of the wheel rotates into the regeneration section. Heat from the natural gas burner causes the desiccant to release the moisture into the regeneration air stream, which is exhausted to the outside.

The unit uses a separate humidistat to control the humidity of the home between 45–55% RH independently of the central cooling system. The unit is a compact, energy efficient, clean burning, gas-fired appliance capable of accurately maintaining the indoor humidity in the desirable range for comfort and prevention of mold or mildew. Relative humidity can go lower than 45% if desired.