7 Best Dehumidifiers for RV of 2021

by Joshua Thomas

Water vapor builds up faster inside an RV than in a standard home. You can open the windows to stop the water vapor from condensing and ruining your RV, but when it's cold outside, a dehumidifier for RVs becomes your best option.

With an RV dehumidifier, you can rid the air of its water content, drying the air in your RV, thereby and preventing the water vapor from condensing on your walls and ruining your RV investment.

This review focuses on the best offers in the market and it includes an insightful buying guide to help you choose the best dehumidifier for your RV.

Top Dehumidifiers for Rv of 2021 by Editors

Top Dehumidifiers for Rv of 2021 by Editors
Top Dehumidifiers for Rv of 2021 by Editors

Summary of 7 Best Dehumidifiers for RV

Eva-Dry Petit Mini Dehumidifier For RV

1. Eva-Dry EDV-1100 (Best Overall)

  • Silent humidifier that uses little power
  • Ideal for small campers
  • Small enough for tabletops & workbenches
Pro Breeze Mini Dehumidifier For RV

2. Pro Breeze PB-02-US

  • Small and compact dehumidifier
  • Low power consumption of just 20 Watts
  • Removes 9 oz of moisture per day
Keystone KSTAD50B 50-Pint Portable Dehumidifier For RV

3. Keystone KSTAD50B

  • High-capacity dehumidifier up to 50 pints per day
  • Ideal for spaces up to 3,000 sq ft
  • Easy to use digital controls
Powilling 8280W 2,200 Cu. Ft Peltier Dehumidifier For RVs

4. Powilling Dehumidifier

  • Compact dehumidifier
  • Portable and easy to use
  • Collects up to 1.2 pints per day
Ivation IVADM35 High-Efficiency Peltier Dehumidifier For RV

5. Ivation IVADM35

  • Stylish and quiet operation
  • Ideal for up to 2,200 cu ft large spaces
  • Collection tank holds up to 3 days of water
Hysure Portable Mini Dehumidifier For RVs

6. Hysure Dehumidifier

  • Very low 37 db working noise level
  • Compact and lightweight
  • Large 1-pint tank collects water for 2 days
InvisiPure Hydrowave Quiet Thermo-Electric Dehumidifier For RVs

7. InvisiPure IP-DH800

  • Strongest Peltier dehumidifier
  • Removes up to 1.7 pints per day
  • Comes with a 1-year warranty

1. Eva-Dry EDV-1100 - Best Overall

Eva-Dry Petit Mini Dehumidifier For RV
Eva-Dry Petit Mini Dehumidifier For RV
  • Area: 1,100 cu. ft
  • Noise: 51 dB
  • Dimensions: 6.5 x 5 x 8.5 inches

Here comes a great but mini-sized electric dehumidifier for RVs. It runs on only 23 watts of electricity and is just 50.9 dB loud. Please note that this is a relatively small dehumidifier, measuring just 6.5 x 5 x 8.5 inches and weighing just 1 pound.

This dehumidifier uses no compressor, but rather a thermo-electric Peltier module to do its job, resulting in its low energy consumption. It's also very easy to understand and use, including its air filter, detachable water tank, and simple controls.

It's one of the smallest dehumidifiers for RVs and features simple controls, including an On/Off button plus LED status indicators. This dehumidifier is for areas up to 1,100 cubic feet in size, which might seem large but is really small and definitely not for use by more than 1 person.

It has a stylish design, which lets it fit easily into the most modern interiors. The water container is easy to reach from the front but it's only a half pint large.


  • Features an auto shut-off mechanism
  • Ideal for small campers up to 1,100 cu. ft large
  • It's silent and uses little power
  • Small enough to fit on a table or workbench


  • Only ideal for really small spaces
  • It lacks a continuous drain option

2. Pro Breeze PB-02-US Tabletop Dehumidifier

Pro Breeze Mini Dehumidifier For RV
Pro Breeze Mini Dehumidifier For RV
  • Capacity: 0.56 pint per day
  • Area: 1,200 cu. Ft / 150 sq. ft
  • Dimensions: 7 x 6 x 11 inches

Here's another small and compact desiccant dehumidifier offered by Pro Breeze at a fair price. It comes with everything ready to go, including a power adapter and a user manual.

This dehumidifier has a 16-ounce water tank for collecting moisture, but it only works at a rate of 9 ounces or 0.56 pint per day. Yes, it's too small for a large RV, but it's perfect for a small one.

Electric functions are also available and include an auto-off function once the bucket is full, plus a LED indicator to call your attention to it.

In addition to its simplicity and ease of use, this Pro Breeze dehumidifier is also beautifully made. It's the perfect choice for someone who needs a small and beautiful dehumidifier for his recreational vehicle.


  • Lightweight, small and compact dehumidifier
  • Removes 9 ounces (0.56 pint) of moisture per day
  • Runs on just 20 Watts of electric power
  • Large tank holds water for nearly 2 days


  • It's not ideal for RV larger than 150 sq. ft
  • It lacks a frost control option
  • There's no possibility for continuous draining

3. Keystone KSTAD50B Dehumidifier

Keystone KSTAD50B 50-Pint Portable Dehumidifier For RV
Keystone KSTAD50B 50-Pint Portable Dehumidifier For RV
  • Capacity: 50 pints
  • Area: 3,000 sq. ft
  • Noise: 55 dB
  • Dimensions: 10.8 x 15.4 x 23.3 inches

This portable dehumidifier for RVs packs a lot of features that make it stand out from the rest. First off, it can remove up to 50 pints of moisture from the air per day.

It's quite an efficient machine that can easily dehumidify areas up to 3,000 sq. ft large. You get a digital control system with a display, a timer, frost control for working in cold weather, auto-restart after a power outage, and a 14-pint large water tank.

Alerts keep you notified of necessities like a full bucket and filter change, and the option to continuously drain the water is also available. Although this package does not include the draining hose, it is still one of the best dehumidifiers for RVs.

Another disadvantage of this dehumidifier is its relatively high operating noise of 55 decibels. However, it's Energy Star compliant, uses 520 Watts peak, and comes with 4 casters for easy mobility.


  • High-capacity removal of up to 50 pints per day
  • For use in spaces up to 3,000 sq. ft large
  • A continuous draining feature is available
  • It features an easy to use interface


  • It's comparatively loud at 55 dB
  • Does not include continuous drainage hose

4. Powilling Dehumidifier

Powilling 8280W 2,200 Cu. Ft Peltier Dehumidifier For RVs
Powilling 8280W 2,200 Cu. Ft Peltier Dehumidifier For RVs
  • Capacity: 1.2 pints
  • Area: 2,200 cu. ft
  • Noise: <45 dB
  • Dimensions: 8.9 x 6.5 x 14.4 inches

Powilling's 8280W is a high-performance camper dehumidifier based on the Peltier technology. Its performance might pale when compared to desiccant or refrigerant models, but it's a winner among Peltier dehumidifiers.

It's beautifully designed, comes with simple and easy to understand controls, and is lightweight and portable. It'll collect up to 1.2 pints per day and its water collection tank is 4.5 pints large.

Extra features include automatic turn-off if the water tank is full, a 60-day money-back guarantee, and an 18-month manufacturer warranty to make it one of the best electric dehumidifiers for RV.

However, it lacks a continuous draining feature, but the entire thing is just 2 lbs heavy and works well in spaces up to 270 sq. ft large. It comes well packaged and includes a 100-inch long power cord.


  • Quiet Peltier technology does not disturb
  • Collects up to 1.2 pints per day
  • Includes a 4.5-pint water collection tank
  • Comes with an 18-month warranty


  • A continuous draining system is not available
  • Designed for small RV only

5. Ivation IVADM35 Dehumidifier

Ivation IVADM35 High-Efficiency Peltier Dehumidifier For RV
Ivation IVADM35 High-Efficiency Peltier Dehumidifier For RV
  • Capacity: 1.2 pints
  • Area: 2,200 cu. ft
  • Dimensions: 14.1 x 7.2 x 9.6 inches

The Ivation IVADM35 is a small to medium-sized Peltier dehumidifier with nearly the same features as the Powilling 8280W above.

It features a 1.2-pint capacity, weighs just 4.5 pounds, and includes a 4.2-pint water storage tank. Ivation rates it ideal for spaces up to 2,200 cu. ft and it's great for sleeping quarters because of its low-noise operation.

You get a power cord with it that's about 6-feet long, but there's no option for continuous drainage with a hose.

Still, it's one of the best 12V dehumidifier for RV and uses only 72 Watts of power and it comes at a good price as well.


  • Gathers up to 1.2 pints daily
  • Designed to serve spaces as large as 2,200 cu. ft
  • Very quiet operation and nice design
  • Includes auto-off features


  • Not ideal for medium to large-sized RVs
  • It lacks a continuous drain system

6. Hysure Dehumidifier

Hysure Portable Mini Dehumidifier For RVs
Hysure Portable Mini Dehumidifier For RVs
  • Capacity: 0.5 pint
  • Area: 2,200 cu. ft
  • Noise: <37 db
  • Dimensions: 11.4 x 6.4 x 5.3 inches

Compared to the other devices in this review, this Hysure product is a very portable dehumidifier for RVs, measuring just 11 by 6 by 5 inches and weighing 2.6 pounds.

Furthermore, it uses Peltier technology, so it's very quiet. Hysure rates it at below 37 dB, which means you can sleep all you want, while it's running just near you.

It also comes with all the standard features you can expect from a portable dehumidifier, like auto-off when the tank's full, a simple control system with LED indicators, and an energy-saving 23-Watt operation.

On the downside, it removes only a maximum of 0.5 pint per day, so it's only for small spaces. The package includes a DC adapter and the user's manual.


  • Features a 1-pint tank for up to 2 days
  • Includes an auto-off safety function
  • Very compact and lightweight dehumidifier
  • Very noiseless and does not disturb sleep


  • It's only for small areas up to 700 cu ft
  • The removal capacity is only 0.5 pint per day

7. InvisiPure IP-DH800 Dehumidifier

InvisiPure Hydrowave Quiet Thermo-Electric Dehumidifier For RVs
InvisiPure Hydrowave Quiet Thermo-Electric Dehumidifier For RVs
  • Capacity: 1.7 pints
  • Dimensions: 9.8 x 6.1 x 13.9 inches

This device is the most powerful thermo-electric dehumidifier in this review with its 1.7 pints. It takes it 100 Watts of electric energy to do this though, but if you're seeking a quiet and high-capacity dehumidifier, then this is a great offer.

You get a beautifully designed device with features like auto shut-off when the tank is full and a 3/8-inch hose attachment for continuous drainage.

Asides from its relatively large 100-Watt consumption, its price is also on the high side, but it has a 4.2-pint water tank and dual air inlets to maximize efficiency.

A built-in handle tops off its unique design, with the blue light that shines through the water reservoir finishing it off.


  • Strongest Peltier-based dehumidifier on this list
  • Removes up to 1.7 pints daily
  • Compact, efficient, and with a nice design
  • Backed by a 1-year manufacturer warranty


  • It operates at 100 Watts, which is not little
  • Its price is relatively high

How to Buy the Best RV Humidifiers

The Best RV Humidifier Buying Guide
The Best RV Humidifier Buying Guide

Picking out the best dehumidifier for RVs is often a confusing experience for many people. The reasons include the conflicting information produced by different manufacturers to persuade potential customers and their technical differences.

A dehumidifier is a unique technological tool and so it needs a little understanding of its processes for you to make the right choice to fit your needs.

1. Types of Dehumidifier

The first thing to understand about dehumidifiers is that there are three major types based on the process they use in removing water from the environment.

These three types are the refrigerant, the desiccant, and the Peltier dehumidifiers. Following is a closer look at them:

Refrigerant. These dehumidifier types use a compressor to create a colder surface in the environment upon which water vapor condenses to become water. The water is then channeled into the tank.

Refrigerant dehumidifiers are more energy-efficient and they're better for use in a warmer environment. They do not work well in cold temperatures under 15 °C because of the nature of the compressor.

Desiccant. With desiccant dehumidifiers, a desiccant wheel gets used in absorbing the moisture from the air. This system has no compressor, but it does use a fan and an internal heater to recharge the desiccant.

A desiccant is any material that naturally absorbs moisture from the air. Desiccant dehumidifiers are lighter, quieter in operation, and work well in cold temperatures.

Peltier/Thermo-Electric. This third type of dehumidifier is based on a physical phenomenon, which relates electricity to temperature change.

A Peltier dehumidifier uses this phenomenon to create a cool plate upon which water condenses. Peltier dehumidifiers are small and quiet but they have a low rate of moisture removal.

2. RV Space & Dehumidifier Capacity

These are two factors that work together and therefore, need considering together. The RV space refers to your RV size because you'll obviously need a more powerful dehumidifier for larger spaces.

The dehumidifier capacity refers to the amount of moisture that a dehumidifier can remove in any given 24-hour period. This capacity is given in pints, while the space that the dehumidifier is ideal for is given in sq. ft.

3. Power Consumption

The amount of power that a dehumidifier uses depends first on the type of dehumidifier it is, secondly on its capacity, and thirdly on its setting at the time of use.

A refrigerant dehumidifier will use less energy on average than a desiccant dehumidifier. All other conditions being equal, a 90-pint dehumidifier will use more energy than a 45-pint model.

Some dehumidifiers come with extra features that allow higher fan speeds or other energy-intensive operations. You need to consider these three aspects, especially if you're on a tight energy budget.

4. Noise

Desiccant thermo-electric dehumidifiers run quieter than refrigerant models and so, are the better choice in situations where noise is a concern. They will usually produce about 40 dB in their low-speed fan modes.

In higher-speed modes though, most desiccant dehumidifiers will equal their refrigerant counterparts in noise level.

5. Drainage

Most dehumidifiers come with a water bucket for draining the moisture they collect from inside your RV. These buckets come in different sizes depending on the manufacturer, and so need different lengths of time to fill up, after which the dehumidifier turns itself off.

Some designs though, come with a continuous drain option, which allows the dehumidifier to work round the clock without needing to empty any bucket. Your choice here depends on how much convenience you want.

6. Portability

You'll also need to decide how much portability you want. If you want a dehumidifier that you can easily carry around, then look for something lightweight, else, it doesn't matter.

7. Ease of Use

The ease of using the dehumidifier is another point to look at. You need to check out the functions it offers to see how much easier it could make your life.

Offering a laundry setting is an example because this helps you to dry your clothes faster. Other important or helpful features include a timer, adjustable louvers, and a humidistat, which automatically measures and regulates your RVs humidity levels.

Different features could be helpful to different people, so you need to figure out which features you need and which dehumidifier provides it.


We've reached the end of this best dehumidifier for RVs review and you've seen all the different offers out there, including those with Peltier, desiccant, and refrigerant technologies.

While the refrigerant models offer the best price to performance value, the Peltier devices offer the least noise.

The final choice though is yours alone to make because you alone know how important price, noise, convenience, and performance are to you, and which one you find the most important in this situation.

About Joshua Thomas

Joshua Thomas just simply loves cars and willing to work on them whenever there's chance... sometimes for free.

He started CarCareTotal back in 2017 from the advices of total strangers who witnessed his amazing skills in car repairs here and there.

His goal with this creation is to help car owners better learn how to maintain and repair their cars; as such, the site would cover alot of areas: troubleshooting, product recommendations, tips & tricks.

Joshua received Bachelor of Science in Mechanical Engineering at San Diego State University.

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