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6 Best Dehumidifiers To Keep Your RV Free of Moisture, Mold, and Mildew

Last updated August 11, 2021

This post may contain affiliate links.

Author avatar Danny Ashton

Danny as been writing about air purifiers for 10+ years. He is a major fan of home technology, which makes him the perfect person to test and evaluate products for HouseFresh

Packing up the RV and hitting the open road offers endless travel options and an unrivaled sense of freedom. However, anyone who owns an RV will tell you that life in a small space is not always easy. When you’re cooking, bathing, and sleeping all in one room of your house, you’ll soon see the need for a clean and comfortable living space.

With lots going on in an enclosed space, humidity can become a real issue for RV roamers. Taking a shower, cooking dinner, and even breathing will increase the humidity inside your RV, making it far less cozy and far more clammy. Once water vapor comes into contact with cooler surfaces inside the van, it will then turn into condensation, leaving the RV susceptible to dampness and mold.

In order to keep conditions in your RV comfortable, it’s well worth investing in a dehumidifier. By removing excess water vapor from the air, the dehumidifier will help keep your RV in prime condition and keep you a happy camper no matter the conditions.

Taking into consideration various budgets, power consumption, and the size of the units, we’ve put together our top 6 recommendations which are perfectly suited to RV life. It’s important to remember each dehumidifier will work at its best in a specific sized space, so be sure to compare the square footage of your RV against the product specifications.

When compiling our list, we analyzed Consumer Reports and product reviews to rate genuine users’ experience when utilizing these dehumidifiers. This allows us to find the ideal product to meet the needs of an RV space and ensure you’ll be more than satisfied with your purchase.

1. Pro Breeze Electric Dehumidifier

The Pro Breeze Electric Dehumidifier works well for an RV in large parts thanks to how little space it takes up. It has a small footprint, allowing you to set this up anywhere in an RV that may be on the smaller side as well as larger ones. This fits snugly on a counter or tucked out of the way into a corner so it can run without disturbing anyone or anything.

In spite of its size, the unit can manage to cover a good amount of space to create a noticeable difference inside your RV. It works best in warmer conditions too with temperatures above 59°F. Additionally, the dehumidifier is designed energy-efficient so you can run it for hours on end without any worry.

There are no smart features to this unit besides the fact that it auto-detects when the tank is full. An indicator light will shine on the front of the dehumidifier near the power switch. This way, you will know at a glance whether it is time to check on the reservoir tank.

  • Tank Size: 1 pint
  • Room Size Suitability: 215 square feet
  • Weight: 2.4 pounds
  • Special Features: LED indicator light

What we love

  • Low-noise operation
  • User-friendly design so that it is quick and easy to use
  • The power cord is a good length so you can set the unit further from the outlet
  • Automatic shut-off when the tank is full

We don't like this as much

  • When emptying, water can pour out slowly through the small hole
  • Tank fills up fast, so it needs to be emptied often

2. COSVII Small Dehumidifier

The COSVII Small Dehumidifier is a modern, compact unit perfect for any RV. It features a one-switch control for the sake of simplicity. This way, you can plug it in and get it going as fast as needed. It’s designed with a reliable fan and a good air intake with 360° airflow so that it can circulate the room well.

The water tank is of a comfortable size so that it can hold plenty before you need to empty it. Also, thanks to the lid on the reservoir, there is less chance of experiencing any spillage when you take out a full tank. Whenever the tank is full, the unit will automatically shut itself off so that it won’t overflow.

Another beneficial feature of this dehumidifier is that it will save you on your energy costs. It is designed with an upgraded chip, and by making this more of an intelligent unit, the dehumidifier won’t consume as much energy when it runs. So, there is no harm in letting it run throughout the day while you’re traveling in the RV.

  • Tank Size: 4.2 pints
  • Room Size Suitability: 480 square feet
  • Weight: 3.97 pounds
  • Special Features: One-button switch

What we love

  • Lightweight and portable so it is easier to move
  • Lowers humidity levels fast for a noticeable difference
  • Sleek design so it can blend well in the background
  • The reservoir tank is easy to empty

We don't like this as much

  • There's no way to turn off the bright operating light
  • The adapter can run a little warm

3. InvisiPure Hydrowave Dehumidifier

The InvisiPure Hydrowave Dehumidifier is a robust unit that can handle the excessive airborne moisture in your RV. Thanks to its dual air out vents, it offers greater, well-rounded circulation that will cover the camper with no difficulties, clearing out more space in less time. Even so, it is still compact enough that it won’t take up room.

If you still need to move it around, it is a simple process to do thanks to its lightweight design. Alongside that, the unit has a built-in handle on the back for even easier carrying. The unit is rather stylish and modern in its layout so that it won’t be an eyesore, no matter where you decide to set it up in the RV.

When the tank is full, the unit will automatically shut off so you can empty it. However, this is only the case when you don’t have it running in continuous mode. In continuous mode, the dehumidifier will instead drain out water through a connection hose into a space such as a sink. This will make it more convenient since you can truly have it running in the background without checking up on it occasionally.

  • Tank Size: 3.8 pints
  • Room Size Suitability: 300 square feet
  • Weight: 5.7 pounds
  • Special Features: 2 drain options | dual air outlets

What we love

  • Visible water tank so it's easy to check on the water levels
  • Removes moisture in the air at a quick pace
  • Features a quality, washable air filter
  • After any power interruption, the unit can restart on its own

We don't like this as much

  • Could benefit from having a longer power cord
  • Blows out hot air from the side, which can quickly warm up the area

4. Honati Home Dehumidifier

The Honati Home Dehumidifier is an efficient unit that is just small enough to work inside the confines of a standard RV. It is different from common dehumidifiers as it is an electric unit powered by advanced technology. This means that it lacks a compressor, and instead, it operates with a whisper-quiet fan. Because of this, you can run the unit even if someone so happens to be sleeping in the camper without waking them.

This compact dehumidifier has an auto shut-off design so that, even if you happen to forget about it, the unit will still turn off once the water tank has reached its capacity. There is also an LED indicator light that will turn on in the event that you haven’t noticed the tank is full.

To prevent spillage, the water tank has a lid on it that doesn’t come off. Instead, the rubber on the lid opens and water pours from there for a mess-free experience. An additional bonus about this dehumidifier is that it has an air filter that can handle mild airborne dust particles.

  • Tank Size: 4.2 pints
  • Room Size Suitability: 269 square feet
  • Weight: 4.1 pounds
  • Special Features: One-button operation

What we love

  • The Reservoir tank slides out smoothly
  • Easy to remove the air filter for cleaning
  • No need for daily emptying of the tank as it can hold a high volume of water
  • Snap-in design for the water tank so that it is secured

We don't like this as much

  • Being an advanced electrical unit, we’d like to see some extra smart features, such as wifi capability or a mobile app
  • Although quieter than compressor units, this unit does require longer operation to achieve comparable results

5. Eva-Dry Wireless Mini Dehumidifier

The Eva-Dry Wireless Mini Dehumidifier is a versatile unit that is fitting for an RV as it can go just about anywhere. You can leave it out on the counter, or you can tuck it inside a storage compartment that has a particular build-up of moisture. It is sleek, compact, and can stand or hang up and out of the way.

You will know instantly when this is working as the silica gel beads will be orange when they are soaking up humidity. When they turn green, they are at capacity and it is time to dry them out and start over. With this type of technology, the dehumidifier is spill-free and leak-free so there’s no worry about any messes.

Also, this doesn’t have to be plugged in so it can go into areas where you don’t have an outlet. This makes it even more convenient for use on an RV. The unit is completely silent too, meaning disturbance-free operation. Even with how different it is, it still does well at eliminating not just moisture, but odors too.

  • Room Size Suitability: 333 cubic feet
  • Weight: 0.9 pounds
  • Special Features: Absorbing silica gel beads

What we love

  • Highly noticeable when it's time to dry the beads out
  • Doesn't take long to suck up humidity
  • Simple to recharge the unit
  • Made from non-toxic and safe material

We don't like this as much

  • Takes over an entire outlet when recharging
  • This unit doesn’t perform as optimally in high humidity environments as a compressor unit, performing instead more efficiently in low-medium humidity

6. hysure Electric Small Dehumidifier

The hysure Electric Small Dehumidifier lives up to its name, making it ideal for RV use. This unit features ultra-quiet Peltier technology to provide you with a more energy-saving experience. Another feature that saves energy and prevents overflow is the auto shut-off mechanism that will turn the unit off when the tank reaches its capacity.

Operating this unit is achieved with a single button, making it straightforward but efficient. There are just two LED lights. One will indicate that the unit is on, while the other will show when the tank is full. This unit can take in a comfortable amount of moisture inside a small or medium-sized RV before it reaches capacity.

A useful trait about this dehumidifier is that it is built with environmental fluctuations in mind, capable of withstanding low-temperature situations. So, you are free to use this in various environments and still have it working well enough to have a noticeable impact on your humidity levels.

  • Tank Size: 1 pint
  • Room Size Suitability: 215 square feet
  • Weight: 2.4 pounds
  • Special Features: Peltier technology

What we love

  • Portable with a small footprint design
  • Energy-saving for 24-hour operation
  • Quick and easy to set up out of the box
  • Releases a gentle sound that's almost like white noise

We don't like this as much

  • A little time-consuming to empty the tank via the holes
  • When the tank is half-full, it may begin to pull in moisture more slowly

FAQs About RV Dehumidifiers

Why do you need an RV dehumidifier?

An RV doesn’t always have ideal ventilation. So, moisture can quickly build up, and when it does, there can be significant damage. This is typically found in areas like under bed frames or inside storage compartments because these areas don’t see a lot of air circulation.

When this happens, it can lead to mold and mildew. This can harm the carpets and wooden material inside the RV. Not to mention the health concerns that come with breathing in mold spores.

That is why a dehumidifier is beneficial for the well-being of your RV. It can ensure that moisture won’t build up to an excessive amount and lead to future problems.

What do I need to consider when getting a dehumidifier for an RV?

Before you choose just any dehumidifier, there are some important factors to keep in mind when finding one most ideal for your RV.
It isn’t the same as choosing one for your home. These tend to be small or large depending on your needs. However, one of the first things to consider when buying a dehumidifier for your RV is the size of said RV.

Compare the size of it to the square footage of the dehumidifier. This way, you’ll know if the unit will perform well inside the RV.

Also, consider the reservoir capacity of the dehumidifier. This will indicate how much it’s able to hold before you have to empty it.

Besides that, the size of the dehumidifier is important to think about too. If you don’t have much room in your RV, then a more compact unit will help you find the space needed.

Which is the Best Dehumidifier for You?

Perhaps you haven’t realized it, but an RV can be the perfect breeding ground for mold and mildew due to excessive moisture. This can wreak havoc throughout the camper from the bedding to the wood. If left unchecked, it can also lead to health concerns caused by inhaling these spores.

That is where a dehumidifier will help you out the most. It can quickly dry out the area, leaving your RV feeling fresh whenever you step inside it.

Knowing what dehumidifier is more ideal for an RV than a home can be tricky at times. Check out our favorite three dehumidifiers ranked according to the best budget unit, the best mid-range option, and the best high-end unit:

Best Budget OptionEva-Dry Wireless Mini Dehumidifier
Best Mid-Range OptionPro Breeze Electric Dehumidifier
Best High-End OptionCOSVII 2000ml Small Dehumidifier