Dehumidifier Size

If you are in the market for a dehumidifier you will want to make sure you get the correct dehumidifier size to effectively decrease the moisture in your home or work space.

Dehumidifiers decrease the moisture in your home that comes from the humidity outdoors when windows and doors are opened, cooking, showering or bathing, and using your clothes dryer. This moisture can get trapped in areas that have little or no ventilation, like your basement.

A dehumidifier works almost exactly like your air conditioning unit works. Warm, moist air is drawn into the unit and is passed over refrigerated coils. The warm moisture condenses on the cold coils much like when you leave a cold can of pop outside and soon see condensation on the outside of the can.

The condensation drips down and is collected in a tank or bucket. If it is collected in a tank, that tank is probably connected to a drain hose that can be drained into a floor drain of your basement. If it is collected in a bucket you will need to be the one to empty it. Usually once every twenty-four hours.

If you know the square footage of your basement then you will not have to measure. If you don’t know the square footage then you need to find your tape measure and measure length by width and then do the math. This is the exact square footage of your basement.

Determining the square footage of your basement will dictate the dehumidifier size you need to buy. It is also advisable that if you choose a dehumidifier with a range of square footage that you choose one at the upper end of the range. If you should buy one that is too small for the area then you will risk burning up the unit in short order because it will not be able to handle the area.

Once the dehumidifier gets the moisture level down to the setting you choose and program into it it should not run continuously, it should cycle on and off. The first couple of days though it may run continuously as it works to control the level of humidity. It also may run more when the humidity outside is higher because then more moisture is coming into the house.

When you bring your dehumidifier home, read the instruction manual carefully and place it in the middle of the area that needs it. Be sure to check on the level in the bucket every few hours so it does not ever flow. Some units will automatically shut off when the bucket is full so you may not have to worry about overflow like on older units.

Depending on how much moisture the area has will also determine the dehumidifier size. A moderately moist environment about 1500 square feet will require around a 30 pint per hour removal rate. An area that is wetter than that may need a larger unit that will take 70 pints, or more, of moisture out of the air.

A good rule of thumb is that if you need to remove moisture from the air of three or more rooms it would be a better idea to invest in a whole house dehumidifier.