A crawl space might be a part of a home, it, however, is not a part of a home that is frequently visited. It is a part of a building where things that are considered unsightly are kept. This part of the building is not like other parts of the building. Due to this, the requirements for getting a dehumidifier for a crawl space differs from that for getting a dehumidifier for other parts of the house.

If you are looking to get a dehumidifier for your crawl space, you are on the right page. This article contains tips for crawl space dehumidifiers.

Area Coverage

The area coverage of a dehumidifier is the space such dehumidifier can conveniently take water out from. There are certain factors that this is dependent on. Some of them the sealing quality, the relative humidity, and the temperature of the crawl space. If a crawl space has a tight sealing, it will be a lot easier for the dehumidifier t function at its optimum.

If you are buying a dehumidifier for use in a crawl space that is not properly sealed, you will need to purchase a dehumidifier with more power compared to the humidifier you will need in a properly sealed crawl space if they have the same area according to this review page.

Research on Extraction Rate

The function of the extraction rate of a crawl space dehumidifier is to ascertain the quantity of water that such dehumidifier can extract every day. Usually, it is calculated in pints per day (PPD). All things being equal, refrigerant dehumidifiers can be trusted to take out more volumes of water from the air while desiccant dehumidifiers do not take out as much. This is one reason you should purchase refrigerant dehumidifiers if you are looking to deal with a situation of flooding in a crawl space. 

While refrigerant dehumidifiers are known to extract higher volumes of water than desiccant dehumidifiers, the rate at which a particular dehumidifier extracts water from the air is a lot dependent on the brand of the dehumidifier, as well as the exact model of the dehumidifier. The implication of this is you will need to do some research if you must end up buying the dehumidifier with the right extraction rate, you will need to carry out some research.

Operating Cost

You do not need a huge budget to operate a dehumidifier. If you must make use of a dehumidifier consistently, you might need to spend about $35 monthly on electricity. This can sometimes be as low as $15 monthly and as high as $50 monthly. The amount you spend on a humidifier is dependent on the type of dehumidifier you make use of. While several factors affect how much you spend running dehumidifiers, all things being equal, desiccant dehumidifiers cost more to run as compared to refrigerant dehumidifiers.


The temperature under which a dehumidifier operates is an important factor to put into consideration when purchasing one. This is because the capacity of a dehumidifier is dependent on the temperature under which it functions. All things being equal, desiccant dehumidifiers can work better in cold temperatures than refrigerant dehumidifiers. The reason for this is when the weather is cold, it is a lot difficult for refrigerant dehumidifiers to get to the dew point that they need to function properly.

While generally, refrigerant dehumidifiers cannot function at temperatures such as 33 degrees Fahrenheit, there are some brands of refrigerant humidifiers that can function at such temperatures. This means you should research the brands of refrigerant dehumidifiers that can function at 33 degrees Fahrenheit if you have any plans of purchasing a refrigerant crawl space dehumidifier.


The size of your crawl space should be considered before you go ahead to purchase a crawl space dehumidifier. Just the way dehumidifiers are of different sizes, crawl spaces are of different sizes. So, if you purchase a dehumidifier that is not small enough to fit into your crawl space, you would only have succeeded in wasting funds.


The part of your crawl space you intend to position your dehumidifier should be ascertained before you go ahead to buy one. If your dehumidifier must function at its optimum, you will need to keep it nothing less than 6 inches from all walls. When done, you can be certain to get a good flow.


Desiccant dehumidifiers are not as noisy as refrigerant dehumidifiers. This is because refrigerant dehumidifiers run on compressors. Since crawl spaces cannot exactly be considered a living area in an apartment, the noise that dehumidifiers make will not be considered very important in selecting a crawl space dehumidifier.

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