(David C) >
> Dehumidifier?
> A dehumidifier is used to remove excess moisture from the air.
> Some of the most common indications that you may need a
> dehumidifier are:
> Wet stains on walls and ceilings
> Stuffy feeling in a room
> Rotting wood
> Condensation on windows
> Musty smells
> Allergies (if the air in your home is too moist, it will
> encourage the growth of bacteria and mold, common allergens)
>
> A dehumidifier removes moisture from the air. The usual
> technique used to remove the moisture is to condense the
> moisture onto a cold surface.
> Anyone who has poured a cold glass of iced tea on a hot, humid
> summer day knows that moisture will condense on the glass. When
> air cools, it loses its ability to hold moisture; in the case of
> the cold glass, the moisture in the air condenses right onto the
> glass. If the glass is left on a table long enough and if the
> air is very humid, a significant puddle of water can form. You
> may have noticed the same phenomenon in any air conditioner. The
> moisture in the air inside the room condenses onto the air
> conditioner's cold coils. If it's a window unit, the water drips
> out the back of the unit onto the ground.
> A dehumidifier is simply an air conditioner that has both its
> hot and cold coils in the same box. A fan draws the room's air
> over the cold coil of the air conditioner to condense the
> moisture (which normally drips into a bucket). The dry air then
> passes through the hot coil to heat it back up to its original
> temperature. That's all there is to it!
>
> Here is a good link on dehumidifiers

