Moisture is one of an RV’s most cunning foes, particularly in colder temperatures.

And unless you spend all of your time RVing in the Desert Southwest, it may be incredibly tough to avoid if you reside or spend any time in an RV.

If it doesn’t work, you’ll probably want to check into the finest RV dehumidifiers on the market.

We leak moisture into the air every time we breathe.

Showering and cooking may produce a lot of moisture.

And ambient humidity may bring a lot of moisture into your RV, either from precipitation or from the overall environment where you’re driving (for example, the southeast in the summer).

These are the reasons why today’s article focuses on the finest RV dehumidifiers available… to remove moisture from your RV.

What Is The Purpose Of A Dehumidifier?

A dehumidifier is a device that extracts moisture from the air.

This might be an electrical gadget or any other equipment that draws moisture from the air in your RV.

Anything that dehumidifies (removes moisture from) the air does so by condensing the moisture into water, which is then stored in a reservoir.

In An RV, Why Would You Need A Dehumidifier?

Any moisture accumulation leads to mildew and mold growth, and there’s nothing that can damage an RV quicker than mildew and mold (along with rust, of course).

In addition, an RV is a compact living space.

As a result, every shower you take, every meal you make, and every time you breathe, talk, sneeze, or sing adds moisture to the air within the rig.

The more moisture that collects, the more likely mold and mildew will form.

Especially if you’re RVing in a cold region, since (1) you’ll want to keep everything closed up to be warm, and (2) thin RV walls enable cold air to come into close contact with warm, wet interior air, resulting in condensation… even within the walls.

We release moisture into the air every time we cook, wash, or even breathe, and this moisture builds up over time, causing mold and mildew difficulties.

Finally, if you camp or live in a humid region, you’ll want to use a dehumidifier to dry out your RV and eliminate that musty odor.

What Is The Best Size Dehumidifier For An RV?

Of course, the size of the RV will determine this, but in general, you won’t need a huge humidifier for an RV since it has less square footage (and hence a lesser volume of internal air space) to cover than, say, a home.

When shopping for the best RV dehumidifier for your rig, take into account the size of your RV and then hunt for a dehumidifier that can handle that amount of space.

A tiny moisture absorber in a container (like DampRid) to a bigger electrical device might be used.

Because most RVs don’t have a lot of space to fill, there are various smaller dehumidifiers on the market that should work well in almost any RV.

In An RV, What Is The Ideal Humidity Level?

Between 30 and 50 percent humidity is ideal, and the finest RV dehumidifiers will assist maintain levels low.

We’ve previously covered the consequences of excessive humidity.

Humidity levels that are too low might result in nosebleeds, static electricity shocks, dry skin, and even sinus and respiratory problems.

Unless you camp regularly in dry locations, low humidity is typically not an issue in an RV.

What Is the Best Way to Measure Humidity in an RV?

A hygrometer is used to measure humidity in an RV (humidity monitor).

Hygrometers are integrated into many indoor thermometers.

This is an example of a digital hygrometer and thermometer combination (temperature monitor).

ThermoPro TP50 Digital Hygrometer Indoor Thermometer Room Thermometer and Humidity Gauge with Temperature Humidity Monitor

  • 【Air Comfort Indicator】The humidity meter’s humidity level indicator depicts the air condition: DRY/COMFORT/WET, enabling this humidity sensor to assure…
  • 【High Accuracy and Quickly Refresh】Inside thermometer with a high precision of 23% RH and 1°F, perfect for recording changing values…


5 of the Best Dehumidifiers for RVs

Five of the finest RV dehumidifiers for a range of RV sizes are listed here.

#1. DampRid FG50T Moisture Absorber

DampRid is a popular moisture absorber for RVs since it does not need power and absorbs moisture effectively in limited spaces (depending on the ambient humidity in your location).

DampRid is packaged in a plastic bucket and is very simple to use.

Simply remove the lid and place it on the table.

The absorbent crystals in the bucket disintegrate as they collect extra liquid.

The company claims that the huge buckets are useful in settings up to 1,000 square feet.

Depending on the temperature and humidity in your area, the 4 pound capacity buckets seen above are believed to survive up to six months.

DampRid FG50T Moisture Absorber 4 lb. Hi-Capacity Bucket-for Fresher, Cleaner Air in Large Spaces-2 Pack, 4-Pound, White, 2 Count

  • DampRid Moisture Absorber with High Capacity Bucket collects and holds moisture, removing musty aromas from wet environments.
  • For a mess-free solution, the high-capacity design includes Moisture Lock spill resistor technology and a sealed safety lid.

DampRid is a simple, low-cost solution to dehumidify a small room without the need of power.

It’s ideal for boondockers!

DampRid has approximately 10,000 Amazon reviews, with 91 percent of them giving it a 4- or 5-star rating, so it could be worth a try for most RVers.

#2. Eva-Dry E-500 Renewable Mini Dehumidifier

This Eva-Dry compact dehumidifier is yet another low-cost option.

It is roughly five inches long and wide, and two and a half inches tall, and weighs less than two pounds.

The company claims that Eva-Dry has a 10-year lifetime and that it is absolutely quiet while in use.

The Eva-Dry compact humidifier is battery-free and cordless.

The gadget is charged using a strip connected into a power socket (those are the exact instructions! ), and it should last up to four weeks before needing to be recharged.

This small device is “excellent for closets, beneath sinks, cupboards, pantries, automobiles, boat cabins, restrooms, and safes,” according to the maker, and it can protect up to 500 cubic feet (that’s not square feet!).

A 10′ x 10′ square enclosed by a 5′ high wall contains 500 cubic feet of air, which may absorb up to 6 to 8 ounces of moisture from the air.

All of this implies that if you pick this little dehumidifier, you may need many units to absorb the moisture in your RV.

Reviewers say they’ve worked well in RV bedrooms, bathrooms, automobiles, and even refrigerators.

On Amazon, the device has over 6,500 ratings, however we recommend reading the most current ones since the item has been updated and earlier reviews may relate to a different model.

#3. SEAVON Portable Mini Dehumidifier

SEAVON’s portable micro dehumidifier is said to cover a 280 sq ft area and remove 16 oz of moisture every day, making it ideal for tiny RVs.

This stylish, cylindrical humidifier has two settings: sleep and high-efficiency.

It’s either quiet (in sleep mode) or sounds like a little fan, according to reviewers (high-efficiency mode).

It boasts bright LED lights that may be turned off when not in use.

The fact that it turns off automatically when the humidity level hits 45 percent is a nice feature of this little dehumidifier, guaranteeing that it doesn’t run indefinitely and bring the humidity level too low.

This 42W dehumidifier is ten inches tall by six inches wide and weighs little over two pounds.

The SEAVON tiny dehumidifier is powered by normal 120V AC power (so be sure your RV is plugged into shore power when using it for extended periods).


Dehumidifiers, SEAVON Dehumidifier for Home 35oz Small Dehumidifier Ultra Quiet with 7 Colorful LED Light for 280 sq ft, 2 Speeds, Auto-Off, Safe Small Dehumidifier for Bedroom Basement Bathroom Closet RV

  • 【Higher-Efficiency Dehumidification】The SEAVON Small Dehumidifier has a coverage area of up to 280 square feet. This powerful dehumidifier effectively removes moisture from the air…
  • 【2 Working Modes & Colorful Lights】You may choose between high-efficiency mode and silent sleep mode with a single button, depending on your needs. With…


#4. Afloia Q10 Dehumidifier and Air Purifier

This Afloia machine combines a dehumidifier and a True HEPA air purifier into one unit that may be operated simultaneously or independently.

It’s advertised as “ultra-quiet” and capable of purifying and dehumidifying up to 160 square feet (air purifier) and 215 square feet (dehumidifier).

(After listening to a Vine Voice review on Amazon, we’d say it’s not ULTRA silent, but it’s definitely quieter than a standard dehumidifier.)

The Afloia Q10 is chemical-free and runs on 45W of 120V AC electricity.

It is about 12 1/2 inches tall and 8 12 inches broad at its widest point, weighing little under six pounds.

It is available in two colors: black and white.

The user is notified when it’s time to empty the tank or change the air filter via an LED indication light.

When the water tank is full, the machine shuts off automatically.

This product has received 4 or 5 stars from 83 percent of Amazon reviewers.

Afloia Air Purifiers and Dehumidifier in One H13 True HEPA Air Purifier 34oz(1000ml) Small Dehumidifiers for Home Bedroom Office (215 sq ft) Remove Odor Dust Smoke Pet Dander Moisture

  • 【Dehumidifier and Air Purifier Combo】 The Afloia air purifier combines filtration and dehumidification capabilities, and it can dehumidify while purifying.
  • 【True HEPA Filter】 With a real HEPA filtration technology, the Afloia 2-IN-1 air purifier can effectively filter the air and eliminate excess moisture in the…

#5. Yaufey 1,750 Sq. Ft. Dehumidifier

The Yaufey is the biggest dehumidifier on our list, covering 1,500 – 1,750 square feet of living area.

This is a home dehumidifier that may also be used in a bigger RV.

This machine features an automated drain pipe as well as a manual drain tank.

The tank has the capacity to remove up to 32.7 pints of water every day.

The Yaufey dehumidifier has a height of about 19 inches and a width of little over 12 inches at its widest point.

It has wheels and weighs about 24 pounds.

Although reviewers regularly remark the necessity to empty the water tank frequently if not utilizing the 2-meter drain pipe, 91 percent of the approximately 5,300 Amazon reviewers rate this item 4 or 5 stars.

Automatic humidity management, automatic restart after power interruptions, auto on and off, an auto-defrost capability, and a 24-hour timer are all features of the Yaufey.

The item is rated at 200W, according to the specifications.

The machine requires 200W of electricity on high and 100W on low, according to reviews.

Yaufey 1750 Sq. Ft Dehumidifiers for Home and Basements,with Continuous or Manual Drainage, Intelligent Control Quietly Removes Moisture

DEHUMIDIFICATION THAT IS PROFESSIONAL AND EFFECTIVE- With the ability to remove up to 32.7 pints of moisture per day (under 95°F, 90% RH)


Our Dehumidifier isn’t complex since home appliances shouldn’t be.

It has a sophisticated light-touch control…


Is a Humidifier Necessary in an RV?

You may not need a dehumidifier depending on where you camp and reside.

However, if you’re experiencing moisture difficulties in your rig, it’s a good idea to acquire something to address the problem.

With that stated, even if you don’t need or want to utilize a dehumidifier, always operate a roof vent fan in all weather conditions.

(You can buy and install a roof vent fan cover for a reasonable price that will enable you to use your fan in all weather, even rain, without getting water into your RV.)

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Written by Bob Matsuoka
Bob Matsuoka is a blogger and founder of RVing Beginner blog. He has been blogging for over five years, writing about his own family’s RV adventures, tips for people who are interested in buying an RV or taking their family on an adventure by RV.