Best RV Dehumidifier – Updated for 2018

One thing you may never have considered when purchasing your RV was a dehumidifier… let alone what would be the best RV dehumidifier on the market.

An RV is essentially a temporary living quarters on wheels. As such, it makes sense that the air quality inside one will not always be perfect.

Since many people use RVs for long traveling vacations, you could be living inside it as much as you would inside your own home. If you have a humidifier in your home then you can understand why it would be even more important to want an RV dehumidifier.

Humidity and RVs go together. This is because they are in the elements when not locked up in storage. On top of this, when exposed to the environment, it is usually for long periods of time.

Other major factors that can contribute to the buildup of humidity inside an RV include:

  • cooking,
  • washing, and
  • changes in the outdoor temperature compared to the interior temperature.

Dampness in the air can increase in these situations. This can promote the creation of rust on the outside, and structural damage and health issues from mold or mildew on the inside.

Below are our picks of the best dehumidifers for RV use in 2018, which we will also look into in more detail later in this article…

Using An RV Dehumidifier And Hygrometer

You can use a dehumidifier to regulate the humidity, or moisture content, in the air. Usually, damage can occur through the formation of corrosion or mold if the humidity is too high. You use a dehumidifier to bring that level down.

Anywhere between 40 and 60-percent humidity is safe and comfortable to prevent corrosion and mold. A dehumidifier controls this by pulling the moisture out of the air and converting it to liquid water.

The water is then collected in a bucket or container built into the dehumidifier, or removed via a connected hose. Once the collection bucket is full, you can remove it, empty and replace it

This is how you can manage the humidity level at an acceptable level in living spaces. The best small dehumidifier models are used for this purpose not only in RVs, but also in basements, closets, bathrooms, sheds, and garages.

A hygrometer is an instrument you may want to have mounted in your RV at all times. This will track the moisture content in the air and is an easy way to tell when you will need to use your RV dehumidifier.

You can use the hygrometer to determine the dryness (low humidity) or dampness (high humidity) inside your RV. It will give you an understanding of what activities inside your recreational vehicle have an impact on the moisture content. It will alert you when the level gets too high or too low.

Most dehumidifiers and humidifiers have these instruments built in. However, a separate stand-alone hygrometer may be useful depending on how often you use your RV.

For more information on some of the best hygrometers on the market, make sure that you check out this article.

Signs You Need An RV Dehumidifier

You need to be observant of changes taking place inside your RV. For example, if the windows often have excessive condensation, you will need to install a cheap dehumidifier. Also, if the floors or walls of the RV feel damp in any way, you need a dehumidifier.

Besides to being attractive to mold and mildew, high humidity will attract termites and various other insects.

The use of an RV dehumidifier will regulate the moisture content to safe levels for you and your vehicle.

The Different Types Of Dehumidifiers For RVs

There are many different types of dehumidifiers for RV use. They are categorized as electric and non-electric.

The electric type requires access to a power source.

Non-electric dehumidifiers are more popular with RV owners. They fall into two different categories. They are identified as:

  • ‘bucket’, or
  • ‘reusable’

and are easy to distinguish from each other.

The bucket dehumidifiers use water-absorbent crystals in a bucket to regulate humidity. Once the crystals have been completely saturated with water, they need replacement.

The reusable dehumidifiers use silica gel crystals to draw water from the air. Once saturated, you can remove the water from the gel often by placing it in an oven to dry out.

By comparison, electric RV dehumidifiers need far less attention than non-electric. However, they do need an electricity supply to operate and also need more space.

Our Picks of the Best RV Dehumidifiers on the Market

With these points in mind, we have selected some of the best RV dehumidifiers on the market. Factors that we considered include:
  • how well they work,
  • price,
  • features, and
  • user-friendliness.

Keystone KSTAD30B 30-Pint Dehumidifier

This is one of the best cheap dehumidifiers you will find and it is still one of the most efficient. It is EnergyStar rated to eliminate up to 30 pints of moisture daily and capable of working that magic in spaces up to 1,500 square feet. These factors make this one great option as an RV dehumidifier.

There are multiple settings (Normal, Turbo plus Auto-Defrost) and the dust filter is removable and easy to clean. Also, the unit has a built-in alert to tell you when the dust filter requires a cleaning.

What makes this one of the best small dehumidifiers is that you can hook it up for continuous drainage by adding a hose.

Feedback and reviews give this product great ratings although some find it a little noisy, especially for a confined space. A few have reported having leaking issues and that the removable water bucket was not as easy to remove as it should be.

Aside from these points, as with all Keystone dehumidifiers, this RV dehumidifier is powerful and does an excellent a job.

Click here for more information on the Keystone KSTAD30B 30-Pint Dehumidifier.

See It On Amazon

Eva-Dry EDV-1100 Petite Dehumidifier

Any RV dehumidifier that uses Peltier Technology in the design is well worth a look as that means it will be very quiet. The Peltier system has no compressor… the result is what the manufacturer likes to refer to as being “Whisper Quiet”.

The size of this unit is compact so you can tuck it away just about anywhere. In an RV where space is a premium, this means it will not be in the way.

The water reservoir will hold up to 16-ounces and is easy to remove and empty. There’s even an indicator light that will inform you when the reservoir is full and in need of an emptying. It will also shut off once the tank has reached its capacity.

The design of this dehumidifier without a compressor means low energy consumption. The compact size, energy efficiency and simple operation all earn our praise.

The speed in which this dehumidifier can regulate relative humidity in your RV is one key feature why this product is so popular.

Click here for more information on the Eva-dry Edv-1100 Electric Petite Dehumidifier. Also, make sure to check out the short video below…


See It On Amazon

Eva-Dry E-333 Mini Dehumidifier

This lightweight and compact RV humidifier weighs in at only 1.2-pounds. It can take control of the humidity in a space up to 333 cubic feet with no problem and no power. This product is 100-percent renewable and the manufacturer says it will last up to ten years if properly taken care of.

As it is eco-friendly and works without batteries or electricity, there are no cords to mess around with. It is the ideal choice for various applications ranging from:

  • RVs,
  • gun safes,
  • bathrooms,
  • boats,
  • laundry rooms

and anywhere else you need to take control of moisture to fight mold and mildew build up.

Reviews of this best small dehumidifier give it top marks. The portable size and long life of the silica gel (provided you recharge it when required) are the most frequent features noted. It will work in a lot of small spaces which makes this one of the better cheap dehumidifiers on the market.

Click here for more information on the Eva-dry E-333 Mini Dehumidifier. Also, have a look at the short video below…


See It On Amazon

H2Out Space Dryers

This RV dehumidifier is a non-toxic, non-corrosive desiccant style unit. This means that it does not use electricity to operate.

Because it uses what the manufacturer calls a “blue media”, once that turns pale pink, it is due for a recharge. This can take up to two months before you have to recharge.

All you do to recharge is heat the product in an oven for about an hour at 300-degrees F. Heating in the oven completely dries out the content that collects moisture and makes it reusable.

This particular dehumidifier is for small spaces. This makes it suitable for use in closets, bathrooms, kitchens, RVs, gun safes and similar size quarters.

It receives good marks with varying levels of success reported by users depending on where this dehumidifier is used.

Click here for more information on the H2Out Space Dryers – SD100 Series, and see it in action in the video below…


See It On Amazon

Last Words On RV Dehumidifiers…

We all know how dangerous too much or too little moisture in the air can be. It can be harmful to not only our vehicles but it can be harmful to our health as well. That is why RV dehumidifiers are an important part of life on the road.

If you are going to spend a long time on the road, then you don’t want your RV to make you sick. You also don’t want your RV to get damaged through corrosion or mold infestation.

Controlling the dampness in your recreational vehicle is simple with the use of any of the products reviewed here. Each one of these best small dehumidifier options has features that can provide you with effortless moisture control. They are easy to use so they will not disrupt your holiday plans.

There are some great cheap dehumidifiers around nowadays. So before you plan your next road trip, be sure to include the best RV dehumidifier on your shopping list.

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