9 Best RV Dehumidifiers of 2021 Compared & Reviewed

Best RV Dehumidifier
Photo: Eva-Dry

Your RV is not just one of your most expensive investments but also your home on wheels, and it provides much-needed comfort when traversing the country.

And one of the best ways to make it even more comfortable is by investing in the best RV dehumidifiers.

RV dehumidifiers help keep the humidity levels in the RVs at an optimal level and hence allowing you to breathe easy when on the road.

With this, the vehicle then feels as home-like as possible. By keeping moisture levels low, the machine also ensures mold and mildew do not grow in the RV.

These machines will be beneficial when you have to go through areas with different climates and hence different humidity levels. They will also be handy for asthmatics and people with allergies.

Here we aim to make it easy to pick the right one for your RV with some comprehensive reviews of top-rated models and an insightful buying guide.

Best RV Dehumidifiers Buying Guide

How to Buy the Best RV Dehumidifier
Photo: Ivation

1. Type of Dehumidifiers: Desiccant or Refrigerant?

When getting started on your search for the best dehumidifier for RV, you will first need to decide the type that you want to buy, and here the two main options are desiccant and refrigerant dehumidifiers.

– Desiccant Dehumidifier

The desiccant dehumidifier is a water-absorbent type that will allow water to pass through it once yo power it on. This model is relatively smaller when compared to the refrigerant type, which means you can also use it in smaller spaces like closets.

Also, these are often rechargeable, and hence you can use them even in places that do not have power outlets nearby. But, what many users will love most about them is that they provide relatively quieter operation.

The smaller size might be ideal for portability, but this also means these machines will have lower extraction capacity and cover smaller spaces.


  • Lower noise levels
  • Rechargeable
  • Compact and lightweight


  • Smaller coverage

– Refrigerant Dehumidifier 

The refrigerant dehumidifiers are the most popular types, and they are what you will get in many homes. They work by condensing the moisture that they collect from the air in your RV. The fact they are also more affordable is another reason why they are prevalent.

Overall, these types will have a higher extraction rate and cover wide spaces, which means that just one is often enough for dehumidifying a standard RV size.

However, when the temperature drops below the 40 degrees Fahrenheit mark, the efficiency of these machines also seems to decrease significantly. Overall, they are also noisier when compared to the desiccant dehumidifier models.


  • Relatively more affordable
  • Higher extraction rate
  • Wider coverage


  • Not very efficient at low temperature
  • Noisier operation

2. Coverage Area

The coverage area matters a lot as it will determine whether one unit will be enough for you, or you will need to buy several machines to dehumidify your RVs.

That said, the total area of your RV that you want to dehumidify will determine the right coverage for you, and so no one size works for everyone, given the varying RV sizes.

For smaller RVs, something with up to 1,100 cubic feet coverage like the Eva-dry Edv-1100 should be good enough. But, if you have a larger motor home, you may need something with a higher coverage like the 2,200 cubic feet you get from the Ivation IVADM35 to ensure maximum efficiency.

3. Capacity

Before settling on any dehumidifier, you need to know the capacity to avoid disappointments, and the good news is that almost all manufacturers will indicate clearly how much water the tank can hold.

If you want something that can handle long journeys without having to stop and empty the tank, you need to make sure it has a large capacity. Something like the Ivation IVADM45 with a 68-ounce tank should be ideal for long journeys as it will provide a long continuous operation.

But, if you only take short trips on your RVs, something with a smaller capacity like the 6-ounce Eva-Dry E-333 can still be enough.

Read More: What Size Dehumidifier do I Need?

4. Controls

As you choose a dehumidifier for your RV, you need to make sure that the operation will give you an easy time. Something complicated will waste a lot of your time and can even be very annoying.

A good RV dehumidifier should include one or just a few buttons that are clearly labeled to ensure you know what to press when powering it on and off or changing the settings.

An LED display can also be a great addition as it makes monitoring easy, and if the unit also has a remote control, it will be fantastic.

5. Installation

Some RV dehumidifiers will be for permanent installation in your RV. Hence, if the model that you buy requires a permanent setup, you need to make sure the process is straightforward.

Those that will come with clear direction for installation and the necessary mount hardware will give you the easiest time.

However, you will not need to worry about installation if you go for a small and portable model that will only require you to find the perfect space to place them.

6. Extra Features

A dehumidifier that comes with some extra features is always more preferable as it will enhance the functionality of your machine.

The extra features that you will get on your RV dehumidifier will vary from one model to the other. Some extras to watch out for will include built-it sensors, humidistat, and nightlight. An LED indicator for alerting you when you need to refill the tank can also be quite handy.

7. Noise Level

Any RV dehumidifier also needs to be quiet enough to ensure there is not too much noise inside your motorhome, and this is more so when you are sleeping.

The dB rating should give you an indication of how noisy the machine will be. And to make sure you get something that will be silent enough, you should go for something with a noise rating of under 60 dB.

Read More: The Best Quiet Dehumidifiers

9 Best RV Dehumidifiers of 2021 Reviewed




Pro Breeze PB-02-US

1. Pro Breeze PB-02-US (Best Overall)

  • Stylish and compact
  • Auto shut-off
  • Super-quiet Peltier technology
  • Highly energy efficient
Eva-Dry E-333

2. Eva-Dry E-333 (Best Small)

  • Small, space-saving dehumidifier
  • Budget-friendly
  • 100% cordless design
  • Rechargeable dehumidifier
Eva-dry Edv-1100

3. Eva-dry Edv-1100 (Best Electric)

  • Energy-efficient 22-watt electric dehumidifier
  • Superior quality materials
  • Compressor-free operation
  • Plug and play design
Ivation IVADM45

4. Ivation IVADM45 (Best Automatic)

  • Fully Automatic humidistat
  • 25-ounce daily extraction capacity
  • Handy LED indicator
  • Built-in handle
Pro Breeze FBA_PB-03-US

5. Pro Breeze FBA_PB-03-US (Whisper Quiet Operation)

  • Quiet thermo-electric cooling technology
  • 18-ounce extraction capacity
  • Easy water dispense
  • Auto shut off
Hysure Whisper Technology

6. Hysure Whisper Technology (Flexible Application)

  • Flexible design for increased versatility
  • 37 dB noise rating
  • Auto shut-off
  • Easy water dispense
Ivation IVADM35

7. Ivation IVADM35 (High Extraction Capacity)

  • 20-ounce extraction rate
  • No moving parts
  • Advanced Peltier technology
  • Full tank indicator
Ivation IVADM10

8. Ivation IVADM10 (Powerful & Effective in a Small Package)

  • Powerful but still small enough
  • No moving parts
  • Tank full indicator
  • Multifunctional use
InvisiPure IP-DH800

9. InvisiPure IP-DH800 (Convenient Continuous Design)

  • Continuous drain hose ready
  • Up to 300 square feet coverage
  • 27-ounce extraction capacity
  • Dual air out vents

1. Pro Breeze PB-02-US – Best Overall

Pro Breeze PB-02-US

Photo: Pro Breeze

  • Power: 23 watts
  • Coverage Area: Up to 1,200 cubic feet
  • Tank Capacity: 18 ounces

The more compact and stylish design of the Pro Breeze PB-02-US makes it the best overall model. Its sleek look ensures it will look amazing in your RV while the 6-inch width and 8.5-inch height ensure it will take up almost insignificant space.

This dehumidifier uses Peltier technology, which is a thermo-electric cooling technology to ensure it will provide whisper-quiet operation. And with an energy consumption of 23 watts per hour, it is also a highly energy-efficient machine.

With the auto shut off function, it will switch off automatically when the tank is full, while the LED indicator alerts you when you need to empty the tank.

This dehumidifier does not seem to work well in low temperatures, but this is typical of most similar units. But provided the temperature in the RV does not deeps beyond 59 degrees Fahrenheit, it should still work well enough.


  • Stylish and more space-saving design
  • Whisper-quiet operation
  • Switches off automatically
  • Lower power consumption


  • Does not work well in low temperature

2. Eva-Dry E-333 – Best Small

Eva-Dry E-333

Photo: Eva-Dry

  • Coverage Area: Up to 333 cubic feet
  • Tank Capacity: 6 oz

Eva-Dry E-333 is our best small dehumidifier for RV, as it will take up almost insignificant space in your motorhome. Besides the smaller size, this is the cheapest unit on our RV dehumidifier review, and hence making it the best pick for those shopping on a low budget.

The 100% cordless design is quite convenient as it makes this model more portable and ideal for use from anywhere. Because it is renewable and rechargeable, you will get a long service life.

Many users will love that the silica gel beads used on this machine are non-toxic and safe for both kids and pets. These beads will not harm the environment when you discard them as they are 100% Eco-friendly.

The 333 cubic feet you get is relatively smaller when compared to other units on our list, but for smaller RVs, it can still work. Also, the 6-ounce maximum extraction is on the lower side but is still okay for small RVs.


  • Takes up insignificant RV space
  • Relatively more affordable
  • Does not include any cables
  • Renewable and rechargeable for long service life
  • Highly portable


  • Smaller coverage
  • Limited extraction capability

3. Eva-dry Edv-1100 – Best Electric

Eva-dry Edv-1100

Photo: Eva-dry

  • Power: 23 watts
  • Coverage Area: Up to 1,100 cubic feet
  • Tank Capacity: 16 oz

The Eva-dry Edv-1100 takes as a spot on our list as the best electric dehumidifier for RV because despite using up less energy, it is still a highly efficient model.

This 23-watt machine will extract 8 ounces of moisture per day from spaces of up to 1,100 cubic feet, and hence making it unbeatable for small to medium size RVs.

Setting up this humidifier requires little effort as it is a plug and play model. Because it is a high-quality machine made from superior quality materials, you can be sure of using it for a long time to come.

Overall, this machine will be relatively quieter when compared to other models, as it has a 50.9 dB noise rating. And with the simple button controls, it will be straightforward to operate.

There are few complaints about this machine overheating, but in many instances, this results from using it continuously for several days. Hence, if you do not run it continuously every other day, you will never have to worry about it overheating.


  • Uses less energy
  • Super easy to setup
  • High-quality and durable materials
  • Provides a quieter operation
  • Simple controls


  • Quite prone to overheating

4. Ivation IVADM45 – Best Automatic

Ivation IVADM45

Photo: Ivation

  • Power: 60 watts
  • Coverage Area: Up to 2,200 cubic feet
  • Tank Capacity: 68 oz

With the automatic humidistat on the Ivation IVADM45, it is a fully automatic dehumidifier. It will monitor the humidity levels in your home automatically and remove the excess moisture to maintain optimal levels.

This model can extract up to 25 ounces of moisture from the air every day, which means it has the second-largest capacity on our list. You will not have any issues moving it from one spot in the RV to the other as it has a built-in handle.

Because there are no moving parts on this machine, it will provide quieter operation. Also, it has some simple controls, and an LED indicator to ensure using it will be more effortless.

When compared to other units on our list, this dehumidifier is relatively expensive. However, the higher price tag is due to the larger tank and extraction capacity, and should hence not be a big concern.


  • Fully automatic dehumidification
  • Larger extraction capacity
  • Easy to carry with built-in handle
  • Lack of moving parts makes it quieter
  • Handy LED indicator


  • Relatively expensive

5. Pro Breeze FBA_PB-03-US – Whisper Quiet Operation

Pro Breeze FBA_PB-03-US

Photo: Pro Breeze

  • Power: 40 watts
  • Coverage Area: Up to 2,200 cubic feet
  • Tank Capacity: 52 oz

The best RV dehumidifier for you is always one that does not make a lot of noise. With the Pro Breeze FBA_PB-03-US, that is just what you get as it uses a thermo-electric cooling technology that will function without a compressor.

You can also be confident that this unit will extract enough moisture from your RV as it has a relatively higher 18-ounce extraction rate.

When the tank is full, the machine will switch off automatically to prevent a mess. And when it comes to emptying it, the inclusion of a nice plug on the tank’s lid will ensure you can do it quickly and easily.

The lid on the tank is not removable, but you should still be able to clean it effectively. All you need to do is run water through it thoroughly. Reaching the off switch at the back can be a little hectic, but it should not give you any trouble once you get used to the machine.


  • Provides a super-quiet operation
  • Relatively higher extraction capacity
  • Switches off when the tank is empty
  • Tank plug ensures easy emptying


  • Tank lid is not removable
  • Poor off switch location

6. Hysure Whisper Technology – Flexible Application

Hysure Whisper Technology

Photo: Hysure

  • Power: 23 watts
  • Coverage Area: Up to 2,201 cubic feet
  • Tank Capacity: 17 oz

A dehumidifier that will not restrict you just to using it from one spot or for one situation will be preferable. With the Hysure Whisper Technology, that is what you get as it is a flexible unit that you can use bathrooms, crawl spaces, and baby room beside the RV.

With a nose rating of 37 dB, this will be a whisper-quiet unit that you will hardly notice when running, and so you can sleep with no distractions.

This machine will shut down automatically when the tank is full, and with the nice plug on the lid, you can empty it quickly and without making a mess. This is a more energy-efficient and eco-friendly machine that will not waste a lot of energy.

The tank seems to fill up quite fast, and hence requiring more frequent emptying. However, this is an indication that it will be doing good work removing moisture from your air.


  • Works well for different situations
  • Provides a whisper-quiet operation
  • Shuts off automatically when the tank is full
  • Tank makes water emptying easy
  • Does not waste any energy


  • Tank fills up quite fast

7. Ivation IVADM35 – High Extraction Capacity

Ivation IVADM35

Photo: Ivation

  • Power: 72 watts
  • Coverage Area: Up to 2,200 cubic feet
  • Tank Capacity: 68 oz

Ivation IVADM35 is one of the most efficient models on our RV dehumidifier review when it comes to moisture extraction, as it can remove up to an impressive 20 ounces of moisture from the air every day.

This machine’s design makes sure users will have an easy time with it because besides shutting off when the tank is full, the indicator lights will light up to alert you.

Overall, it runs more quietly than others as it does not have any moving parts and uses the super-quiet Peltier technology. You can use this machine in almost any RV as it will cover up to 2,200 cubic feet.

One minor drawback is that it can get a bit hot when you operate it for extended periods. But, users will find that provided you do not run it for over 12 hours, you will never have to worry about it overheating.


  • Higher moisture extraction capacity
  • Easy to tell when the tank is full
  • Relatively quieter operation
  • Works well for different spaces
  • Relatively wider coverage


  • Can get a bit hot

8. Ivation IVADM10 – Powerful and Effective in a Small Package

Ivation IVADM10

Photo: Ivation

  • Power: 22.5 watts
  • Coverage Area: Up to 1,100 cubic feet
  • Tank Capacity: 20 oz

Despite being a more compact unit that will take up less space in your RV, the Ivation IVADM10 is still a powerful 22.5-watt model that can handle all the dehumidification for your RV without requiring any other additional machine.

The convenience of use is also at the heart of the machine as it will include a highly visible light that will alert you when it is full. With the automatic shut off, it will power off when the tank is full to prevent messy overfills.

The flexibility of this dehumidifier ensures that you can use it effectively in different spaces beside the RV, and with its quieter operation, it is also not very distracting.

The dehumidification process seems relatively slower with this machine, but the results that you will get makes it worth a little wait.


  • Powerful enough despite its smaller size
  • Handy indicator alerts you when the tank is full
  • Shuts down automatically
  • Flexible for use in different spaces
  • Provides a quieter operation


  • Relatively slower dehumidification

9. InvisiPure IP-DH800 – Convenient Continuous Drain

InvisiPure IP-DH800

Photo: InvisiPure

  • Power: 75 watts
  • Coverage Area: Up to 300 square feet
  • Tank Capacity: 64 oz

You will never need to stress about emptying tanks with the InvisiPure IP-DH800 as it is continuous drain ready to ensure the water will be draining as the machine extracts it and not stored in the reservoir.

Also, 27-ounce extraction is high enough to ensure maximum efficiency. The 300 square feet coverage is good enough for use in any RVs and most rooms in the home.

Air circulation is also guaranteed to be optimal, as this machine will include dual air out vents. When it comes to portability, the built-in handle will make this an easy tool to lift and carry around.

Because this is a 75-watt model, it will consume relatively more energy. But, this is only so when compared to others on our list. Otherwise, it is still energy-efficient enough for use in an RV.


  • Can drain water continuously
  • Covers more space
  • Dual vents ensure maximum circulation
  • Higher extraction capacity
  • Easy to carry with built-in handle


  • Consumes relatively more power


With the best RV dehumidifier, you will be sure of always having the right moisture content in your motorhome to keep it as comfortable as possible.

While every model we review above does a fantastic job, the Pro Breeze PB-02-US is our best overall thanks to the super-quiet technology and more stylish design.

But for those looking to save some bucks and still get something space-saving and portable they can use from anywhere, the Eva-Dry E-333 is unbeatable.

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