Dehumidifier Buying Guide

Dehumidifiers reduce the moisture in the air, and are good for people who have allergies as allergens like dust mites and mold cannot thrive in dry air. However, you have to be certain that the dehumidifier you choose can work well in the location you want it and has the features you want.

Types of Dehumidifiers


The most common type of dehumidifier, the mechanical models are like air conditioners. They have both a hot and cold coil in the same device. First, indoor air is cooled by the refrigerating coil and moisture is collected in a collection basin or bucket. The air then passes over the heating coil to warm it up to the original temperature. Because the air is passed over a heating coil before being released into the room, it raises the temperature slightly in the location it is placed. This type of dehumidifier is best for moderate to high humidity levels.


Desiccant models are named for the desiccative or drying substance that is used in them. The desiccant substance is exposed to the indoor air with relatively high moisture levels, cooling the air while drawing out the moisture. They do not use compressors and are best if placed in a location with a lower temperature and lower humidity level. They are inexpensive and very effective against low levels of humidity.

Pay Attention to

Space needed to dehumidify

This is the most important thing to consider when buying a dehumidifier. If a dehumidifier is not the right size for the space you need dehumidified, it will waste energy and not take enough moisture out of the air. You will want to be careful to buy a dehumidifier that is big enough to get the job done right. If your area is on the high end of the range for the dehumidifier of choice, go for a larger size to be sure it is large enough.

Humidity Level

Different models will work with various levels of air moisture. If you live in a high-humidity state such as Florida or North Carolina, you will want a dehumidifier that can handle lots of air moisture. If you live in a low-moisture state, however, such as Kansas or Illinois, you will not need a high-humidity dehumidifier and you are likely to waste energy if you do get one.

Water elimination

All humidifiers collect the water that they pull from the air in a bucket or basin. How you eliminate that water is up to you. You may be willing to empty the bucket when it gets full, but if not, go for a dehumidifier you can attach a drain hose to. You can end the drain hose at a floor drain or point it outside. If the water needs to be pumped up, you can attach a condensator pump or purchase a dehumidifier with a built-in condenser pump.

Special Features

Do you need any special features? One special feature you might consider important is ducting, which allows a dehumidifier to work across multiple rooms. Other special features include wheels and handles for easy mobility, remote controls, and digital controls. None of these features are necessary, but can make your life a lot easier.

Top Brands and Product Lines


Founded in 1926, Frigidaire is well-known for its large household appliances, but it also makes some smaller appliances, including dehumidifiers. Their dehumidifiers come in 30, 50, and 70 pint and comply with Energy Star ratings. One of its dehumidifiers is the FAD704DWD Energy Star 70 pint dehumidifier, which can run continuously when located near a drain and has top and side handles, as well as castor wheels.


First introduced in 1927, the Kenmore brand can be said to be synonymous with quality. They are trusted in over 100 million homes worldwide, and their dehumidifiers are no exception to the quality they are known for. A good choice for high-humidity levels is the Kenmore dehumidifier 53571, which complies with Energy Star ratings and has a condensator pump built in.


Founded in 2001, this company's motto is "Moisture's Worst Enemy." They have small and large dehumidifiers alike for all sorts of locations. Their most popular product line, the Renewables, are perfect for gun safes or closets. These mini-dehumidifiers can hang in your closet and feature a crystal that turns from blue to pink when the power is low.


The newest company to make dehumidifiers, New Air is a provider of luxury custom-built home appliances since 2002. They pride themselves on precision and class. Their products are exceptional pieces of technology with a stylish look. You will certainly pay a luxury price for these dehumidifiers, however. The Quest 700816 Dual 150 Overhead Dehumidifier is one of the most energy efficient dehumidifiers on the market. It is designed to hang overhead, out of the way, and will save you thousands of dollars in the long term. It is best used for greenhouses and hydroponic gardens.