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What Is The Greatest Dehumidifier for Your Camper? I Tenting World Weblog


It’s no secret that extra moisture inside your RV is dangerous. Nonetheless, when most individuals take into consideration water moving into their camper, they give thought to points with the roof or partitions. We are inclined to overlook concerning the moisture within the air – humidity. 

Extra humidity could cause harm, similar to a roof leak. For this reason preventative moisture and condensation administration in an RV is essential. On this article, we’ll overview the whole lot you could find out about prevention, from cracking a window to utilizing the finest dehumidifier for an RV to maintain humidity at bay.

How Does Humidity Get Inside an RV?

steaming pot on stovetop
Photograph by Getty Photographs

There are numerous methods humidity can enter your RV. For starters, humidity is attributable to respiration, so that you’ll by no means cease it fully. It happens when cooking; moisture is expelled from meals and into the air. It accumulates from showers, which will be amplified with extra individuals staying contained in the camper. 

For those who dwell in a damp atmosphere like Florida, you’ll seemingly have extra issues than somebody dwelling in Montana. The best way the RV is constructed additionally performs an element. RVs with poor insulation truly do a greater job of eliminating moisture attributable to higher circulation. You’ll by no means cease all moisture from getting into your RV, so that you’ll must take steps to monitor and take away it.

Keep in mind that you don’t wish to take away all moisture from the air; your purpose must be to have a humidity degree between 30% and 50%.

Why Is Humidity Inside An RV a Downside?

Black mold on white wall
Photograph by Getty Photographs

There are numerous causes to take away extra moisture from the air in your RV. It may well make you’re feeling sizzling and sticky in the summertime and even make respiration more durable. If the moisture will get trapped behind the partitions and ceiling, it will possibly result in delamination, mould, and mildew. Mould and mildew are larger points whereas your RV is in storage, the place your camper can sit for a number of months, normally lined.

Spring and summer time are usually probably the most humid seasons as a result of heat air holds extra moisture, however humidity may trigger issues within the winter. Condensation can happen, leading to water droplets on the home windows, doorways, and counter tops. 

Stopping and Getting Rid of Humidity

Coleman portable dehumidifier
Photograph by Tenting World

There are numerous methods to take away humidity inside an RV. The most important helper is your air-con unit. Humidity is made worse by an absence of circulation, and your air conditioner does an amazing job of circulating air all through the RV. Nonetheless, you’ll be able to’t at all times depend on this alone. Listed below are another useful methods:

  • Open a roof vent to let moisture escape when showering.
  • Crack the closest window close by when cooking.
  • Use your vent fan to flow into air all through the RV when climate permits. 
  • Depart home windows open in a single day when circumstances allow.
  • Complement your RV air conditioner with top-of-the-line dehumidifiers for RVs.

Let’s look additional into this last choice.

Forms of RV Dehumidifiers

Photograph by Tenting World

The 2 primary kinds of electrical dehumidifiers for RVs are compressor and desiccant. The compressor-style pulls air by means of a filter and passes it over a set of cooling coils, which acquire water because the air condenses. Alternatively, desiccant dehumidifiers pull air in and push it by means of a rotating wheel, which accommodates supplies used for drying air, equivalent to “silica.” 

Let’s take a look at a few of the execs and cons of every kind:

Professionals Cons
Compressor Price Efficient
Very Environment friendly
Noisy
Not Efficient in Chilly Temps
Desiccant Quiet
Works Nice in Chilly/Heat Temps
Excessive Energy Consumption
Extra Costly

Listed below are three of our top-selling electrical RV dehumidifiers:

There are additionally non-electric desiccant-style dehumidifiers. These don’t require an influence supply, which makes them nice for storage or on a regular basis use since they don’t steal energy from different home equipment or take up ground/cupboard space. Nonetheless, these trailer dehumidifiers should be changed periodically as they don’t seem to be reusable.

Do I Want a Dehumidifier for RV in Storage?

Securing RV cover
Photograph by Tenting World

Sure, a dehumidifier for a camper is essential whereas it’s in storage, because the possibilities of mould and mildew buildup are larger. An absence of circulation normally causes this attributable to an RV cowl blocking the vents. Cracking a window or vent whereas in storage is sensible, however you’d nonetheless wish to use a dehumidifier whereas sitting for prolonged intervals.

For those who can entry shore energy in storage, you should use an electrical dehumidifier. In any other case, you’d want to make use of a non-electric desiccant dehumidifier, additionally typically referred to as a moisture absorber.

Listed below are a few of our picks for the most effective moisture absorber for RV use: 

Selecting the Greatest RV Dehumidifier

Electric vs. desiccant dehumidifiers
Photograph by Tenting World

Measurement is an important issue when choosing a dehumidifier for RV dwelling. This consists of the dimensions of the unit and the quantity of sq. footage it’s rated for. Let’s look nearer at dimension/sq. footage score and different elements to decide on the most effective dehumidifier for a journey trailer or every other RV kind.

Measurement and Sq. Footage Score

For those who select a dehumidifier that’s too small, it should run continually and wrestle to control humidity ranges. For those who select a unit that’s too giant, it will possibly take up extra ground area and have larger wattage necessities. Though an outsized dehumidifier is best than a small dehumidifier for RVs, it’s finest to get the proper dimension. 

You will discover the proper dimension by measuring your RV’s inside size and width to get the sq. footage. For instance, in case your RV is 30’ lengthy x 9’ broad, you should account for 270 ft². Due to this fact, a unit rated for 300 ft² can be the proper selection. 

Tank Measurement

Tank dimension can also be essential to contemplate when choosing dehumidifiers for campers. The smaller the tank, the extra ceaselessly you should empty it. Nonetheless, a bigger tank means the unit takes up more room. 

For those who plan to depart the unit working for an prolonged interval, you’ll need an RV dehumidifier with a drain hose so it doesn’t shut off when the tank is full. Most settle for a regular backyard hose, which you’ll be able to path to the closest sink, permitting the dehumidifier to empty into your RV’s grey water holding tank. Because the drains are gravity-fed, you should place the dehumidifier on a counter above the sink. Depart the waste valve open to forestall overfilling your grey tank. 

You could possibly additionally drill a gap in your ground in the event you don’t wish to set it on the counter, however the former is most popular. For those who dwell in an space with chilly temperatures under freezing, contemplate a non-electric dehumidifier to forestall water from freezing within the tank and contours.

Energy Supply

Electrical dehumidifiers require an exterior energy supply, normally 120VAC or 12VDC. For those who spend most of your time on the campsite hooked as much as shore energy, 120VAC is your only option. Nonetheless, in the event you camp off-grid with out entry to shore energy, you’d wish to contemplate a 12v dehumidifier for RV use.

If neither energy supply is accessible, don’t fear—there are nonetheless loads of power-free desiccants to select from.


You’ll by no means remove all of the humidity inside your RV, nor will you wish to. The purpose is solely to observe and management it. Some issues you have already got that may assist with this like opening a window or working the vent fan, however they need to even be supplemented with a dehumidifier. 

Listed below are just a few extra sources that can assist you preserve your RV at a snug temperature:

We hope you discovered this text useful. Tell us within the feedback under about your experiences with humidity in an RV. 


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