The Best Small Dehumidifiers for Use at Home or On the Go

Reduce allergens and the risk of mold and mildew growth in your home or RV's modest living spaces with a small dehumidifier. 

By Ana Chevalier | Updated Jan 20, 2021 11:27 AM and its partners may earn a commission if you purchase a product through one of our links.

Best Small Dehumidifier


Dehumidifiers eliminate excess moisture from the air, drying damp or excessively moist environments. Specific allergens require appropriate ecosystems to reproduce and thrive; dust mites, for example, need at least 65 percent humidity to thrive. Removing the moisture in your home can help minimize common allergy triggers such as animal dander, mold, pollen, and dust mites that can cause itchy or irritated eyes, wheezing, sneezing, and even chest pain. A dehumidifier can easily maintain the predetermined humidity level that you desire, making your room uninviting for these allergens. This regulation of humidity levels can also protect important documents or musical instruments from damaging moisture and prevent bacteria, mold, or mildew growth.

Dehumidifiers range in size, capacity, and available features. Small, compact dehumidifiers can be ideal for managing humidity in tinier spaces like bathrooms, crawl spaces, RVs, and children’s bedrooms. Since they’re portable, moving them from room to room is a simple and straightforward task. However, finding the best small dehumidifier for your home or RV is not an easy choice.

Our Top Picks

As with most home appliances, there are hundreds of models of small dehumidifiers from dozens of manufacturers from which to choose. Read on to discover the top picks for some of the best small dehumidifiers on the market in a variety of categories to keep your modest spaces moisture-free.

Best Overall

The Best Small Dehumidifier Options Alrocket

The ALROCKET portable dehumidifier boasts a 35-ounce/1000 milliliter-capacity tank that can extract nearly 16 ounces (450 milliliters) of water daily from a humid environment of 86 degrees Fahrenheit and 80 percent relative humidity. Instead of using a compressor to remove moisture from the air, this dehumidifier employs thermoelectric Peltier technology to create a motionless cooling effect which, in turn, creates droplets of condensation. The secondary result is a machine that’s effective and saves energy, as it uses just 40 watts of power per hour and only 0.96 kilowatts after running for 24 hours.

Another feature of the Peltier technology is the quiet running capacity of this humidifier at only 39 decibels (dB), which allows for a better sleeping environment when used at night. When the water tank level reaches a certain point, the dehumidifier will automatically shut off to protect from the risk of overflow. Measuring 5.7 inches by 5.7 inches by 8.9 inches and weighing only 2.87 pounds, this unit is ideal for rooms up to 2,100 cubic feet.

Best Bang For The Buck

The Best Small Dehumidifier Options EvaDry

This wireless mini dehumidifier from Eva-Dry boasts one of the most straightforward installations of any humidity control device on the market: Just hang it up and you’re done. It is ideal for installation in spaces that are too small or awkwardly shaped for a standard dehumidifier or in rooms with no available outlets in the immediate area. Since there’s no need to run an extension cord into a closet or other small location—or worse, install a costly new outlet—this small dehumidifier saves time and money.

The humidifier absorbs up to 6 ounces of moisture from the immediate area and lasts for 20 to 30 days before the silica gel beads need to be recharged. Plugging the unit into an outlet dries out the silica gels, enabling you to reuse it again and again. It’s nontoxic and safe to use around pets. It measures 9 inches by 8.25 inches by 2.88 inches, weighs only 14.4 ounces, and works efficiently in areas up to 333 cubic feet, such as cars, boats, closets, cabinets, gun safes, and even gym bags.

Upgrade Pick

The Best Small Dehumidifier Options Tenergy

A standard dehumidifier will improve the air quality of your space by limiting musty odors, mold, and mildew. When you add an air purifier to the mix, then you’re also directly reducing dust mites, pollen, pet dander, and other allergens at the same time. With this hybrid model from Tenergy, you’ll get double the comfort from one unit.

The dehumidifier feature can remove 750 milliliters of moisture per day in environments with 80 percent humidity at 86 degrees Fahrenheit. When the 33-ounce/1-liter water tank reaches full capacity, an automatic shutoff will prevent overflow. Using a true HEPA filtration system, this small dehumidifier can also remove up to 99.97 percent of microparticles and allergens from the environment at the same time. It may cost more than a standard small dehumidifier, but having the benefits of an air purifier in the same unit can save both space and money in the long run. This small dehumidifier is ideal for spaces up to 200 square feet, and it runs at a quiet 35 to 42 decibels.

Best Portable

The Best Small Dehumidifier Options hysure

Measuring 12 inches by 6 inches by 5.7 inches and weighing only 2.55 pounds, the compact dehumidifier by hysure is easy to take with you wherever you need to go. It is equipped with a large 600-milliliter-capacity tank, which extracts up to 300 milliliters of moisture each day (at 86 degrees Fahrenheit with a relative humidity of 80 percent). The streamlined design is ideal for small spaces where people are sleeping, like a baby’s room or small bedroom. The dehumidifier operates at a noise level below 33 decibels, which is equivalent to the ambient noises of a quiet, rural area.

The humidifier features a one-touch operation interface, and it‘s an environmentally friendly and energy-saving solution for mitigating the effects of household dampness and condensation issues. An LED indicator lets you know when the tank has achieved full capacity, and the unit will automatically shut off at that point.

Best For RVs

The Best Small Dehumidifier Options Seavon

Condensation forms when warm, moist air comes in contact with a cold surface. One of the best ways to combat this natural but annoying process in an RV is to use a dehumidifier. This small dehumidifier from Seavon provides a 16-ounce/500-milliliter-capacity tank that can extract up to 10 ounces/300 milliliters of moisture each day. The ultraquiet technology, emitting only 30 decibels of noise, allows you to run it day and night without disturbing you and your passengers while driving or sleeping.

The dehumidifier measures 7.2 inches by 6.2 inches by 11 inches and weighs 2.4 pounds; it won’t take up much room in a small space like an RV and in small rooms like bathrooms, kitchens, storage rooms, closets, wardrobes, and offices. When the tank is full, this dehumidifier shuts off automatically and triggers an LED light.

Best For Crawl Spaces

The Best Small Dehumidifier Options hysuremini

Crawl spaces and basements are the most common locations for moisture to accumulate. Any space below ground is subject to the cooling effects of earth and clay surrounding the house and shielding it from the warming sun. Moisture will naturally condense on cold surfaces. Left unchecked, this will encourage the growth of mold and mildew.

A standard-size humidifier will be awkward to maneuver in a tight crawl space or basement closet. In these situations, consider this portable mini dehumidifier from hysure. It weighs only 2.4 pounds and boasts a compact size of just 7 inches by 6 inches by 11 inches, making easy work of emptying the portable tank when full. The humidifier extracts up to 250 milliliters of moisture per day from rooms up to 210 square feet and runs at a level lower than 37 decibels. This level of efficiency makes it ideal for placing in tight crawl spaces.

Honorable Mention

The Best Small Dehumidifier Options lenove

This powerful and efficient small dehumidifier from Lonove includes two air inlets for more efficient removal of unwanted moisture from your favorite modest living spaces. It can extract up to 12 ounces/350 milliliters per day in about 165 square feet of indoor living space that has a relative humidity of 80 percent.

Due to its simple one-touch operation, there is little chance of user error with this small dehumidifier. The straightforward design and streamlined technology allow for a quiet running noise of fewer than 35 decibels, which is ideal for adult sleeping locations or even a baby’s room. A handy LED light lets you know when the machine is in operation mode, and a second light reveals when the tank is full and needs to be emptied. An auto-shutoff feature will cease operation when the tank reaches full capacity.