We’re all familiar with the fact that humidity makes a hot day feel a lot more sweaty and uncomfortable. But humid conditions in your home are not just a source of discomfort--excess humidity can also cause a considerable amount of damage, by spawning mold and mildew. A way to ensure protecting your home and is to use a dehumidifier to remove the excess water vapor.
The most popular model of dehumidifier uses a design similar to a refrigerator: There is a compressor using a coolant that cools a metal coil, and a fan that sucks the air from the room and draws it over the cold coil. The water vapor condenses on the cold coil, much like the condensation you see on a cold glass of Coke on a hot day. This condensation collects in a reservoir. There is also a warm coil that reheats the (considerably drier) air, before sending it out of the room.
Dehumidifiers differ in the capacity of their reservoirs, as well in the area they are designed to dehumidify. On a humid day, or in a basement that suffers from dampness, a reservoir that collects 16 pints of moisture a day can fill up in as little as 8 hours! Luckily, most dehumidifiers will shut off when the reservoir fills up so that the condensed water won’t start leaking out of the appliance. But there’s an even better design: There are dehumidifiers that are supplied with a pump, that can pump the condensed water out of the reservoir, through a drainage pipe, and into a sink or out to your lawn.
That’s how a pump dehumidifier works, in a nutshell. But there are still features and benefits to consider. This buyer’s guide will help you:
Choose the right type of pump dehumidifier,
See useful tips about that particular type of pump dehumidifier,
Read reviews of different pump dehumidifiers, and what customers are saying,
Select the right brand of pump dehumidifier, and
Compare prices and find the best deals.
We can distinguish between portable and stationary pump dehumidifiers:
Portable: This type will be on caster wheels, allowing you to transport the dehumidifier from one place to another. Just keep in mind that you’ll want the dehumidifier pump to drive the condensed water into a nearby sink or drain somewhere.
Stationary: This design will be positioned in one place in your house--probably the basement, which is the place that suffers the most from excess humidity. The collected water can be directed by a hose into a drain, sink, or out of the house entirely.
Display: A bright LED display will let you read the dehumidifier’s settings, even in dim lighting. The Ivation Dehumidifier has a display that shows you the humidistat settings, the fan speed, the time settings, and even when to clean the filter!
Cleaning the unit: To maintain the dehumidifier’s effectiveness, it’s recommended to wipe out the water reservoir once every two weeks, and wash the filter once a month.
Energy-saving features: There are dehumidifiers with a timer so that you can set the hours that the device operates. They also have an auto-shutoff feature when the unit senses that the room has reached the desired humidity (so that the unit won’t have to work when it doesn’t have to). There is also a frost control on some units, which protects and defrosts the evaporator coils if the surrounding air is too cold. That keeps the unit from freezing up.
Quick-connect hose: When your dehumidifier has a pump to remove humidity, you want a hose that attaches to the unit easily. The Tosot 70-Pint dehumidifier has a hose that you can connect without any special tools. With a pump, it should be able to remove the collected water vapor horizontally, vertically, or even in a spiral!
Strength of the pump: If you use a dehumidifier that doesn’t have a pump, you’ll be forced to empty out the reservoir by hand every so often. That could be once a day--but it could be once every 8 hours as well! The advantage of the pump is that it will drive the water through a hose, against the direction of gravity. Check the strength of the pump, by seeing how far it can drive the condensed water. The EdgeStar DEP701WP Portable Dehumidifier will be able to drive the water either horizontally or vertically through the drain pipe, as much as 16 feet away.
Capacity: You’ll see dehumidifiers in a range of capacities, from 25 to as much as 95-pint capacities! This indicates how much water they are capable of removing in a day of operation (but not the capacity of the reservoir--beware of this mistake!). A dehumidifier with a larger capacity thus works more quickly, by condensing more water vapor when operating for the same amount of time as a smaller model. Choose the model size according to the size of the area you’re planning to dry out: A 50-pint model is effective for an area of 1000-2500 square feet, while a 70-pint model will be able to dehumidify a 2500-4000 square-foot area. Larger models will thus save energy as well since you can run them for less time.
Check how noisy the unit is: If you choose a portable unit, that will work in your living room, you don’t want a unit that is too noisy. You should look for a unit that operates at somewhere between 50-60 decibels so that it’s no more than a hum that you hear in the background.
Operating temperatures: Take note of the operating temperatures of your device. The EdgeStar DEP701WP 70-Pint Dehumidifier operates in a room temperature from 41 - 95 degrees Fahrenheit.
Don’t reduce humidity too much: You’ll see that dehumidifiers let you program the humidity levels--sometimes to great precision. The Ivation 70-pint Dehumidifier lets you program humidity levels in 5% increments. Don’t let humidity levels drop below 45%--that tends to be too dry. Keeping humidity below 50% will be sufficient to prevent a dust mite infestation while keeping humidity below 60% will prevent water damage due to mold and mildew.
Keystone--is a retailer of a number of air quality products, including air conditioners, dehumidifiers, and other household electrical appliances.
Frigidaire--was founded in 1918 in Fort Wayne, Indiana, as developers of the first self-contained refrigerator. Their present headquarters is in Charlotte, North Carolina. They make products for the kitchen--such as refrigerators, ranges and stoves, dishwashers--washers and dryers, and air conditioners, dehumidifiers, and air purifiers.
Friedrich--was founded in 1883 by Ed Friedrich of San Antonio, Texas. Although the company was originally involved in carpentry and cabinets, they expanded into refrigeration and air conditioning in the 1950s, and later on, dehumidifiers. The company’s main focus presently is making products with energy-saving and smart features.
Ivation -- was founded in 2013. Their headquarters is in Ridgefield Park, New Jersey. They sell a wide range of appliances for the home, outdoors and office, in a stylish variety of colors: wine coolers, dishwashers, air conditioners, air purifiers, and dehumidifiers.
Edgestar--have been making specialty appliances since 2004 for the home and outdoors. Their products include refrigerators, dishwashers, ice makers, air conditioners, dehumidifiers, and washers/dryers. They also sell grills and refrigerators and freezers for campers. Their dehumidifier has a 70-pint capacity, and a drain pump to expel the condensation.