7 Best Dehumidifiers for RVs (Honest Reviews: 2021 Update)


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Getting a dehumidifier for your motorhome can make a massive difference. One of the biggest enemies of an RV is moisture. Whether it’s coming from our breath, rain, or humidity in the air, moisture leads to mold and rot. Fortunately, you can use a compact dehumidifier to pull the water from the air.

The best dehumidifier for RVs is the Pro Breeze Electric Mini Dehumidifier. It works for spaces up to 250 sq. ft., it has a 52-ounce water reservoir, and there’s an auto shutoff option on the tank. To empty the dehumidifier, simply remove the tank, dump it out, and replace it.

Throughout this article, you’ll also learn the following information about the best dehumidifiers for RVs:

  • What you need to think about before you make get one
  • The best dehumidifiers for a variety of purposes
  • How you can get the most out of your dehumidifier
7 Best Dehumidifiers for RVs

What to Consider When Getting a Dehumidifier for Your RV

Instead of getting the first dehumidifier that you come across, it’s essential that you analyze the following three factors:

  1. The size of your motorhome as it relates to the square footage of the dehumidifier
  2. How many ounces the dehumidifier can hold before it needs to be emptied
  3. Various factors that influence the price of the unit

I’ll jump into the list below, detailing everything that you need to know to get the perfect dehumidifier for your motorhome.

What’s the Size of Your Motorhome?

The size of your motorhome directly impacts how big of a dehumidifier you’ll need. You’ll notice a rating on every dehumidifier in the industry, even those that are designed for houses and other large structures. The cubic or square footage of a dehumidifier should be a little bit higher than that of your RV.

If you’re not familiar with motorhomes, then it’s important to know that there are three sizes: Class A, B, and C. Despite their names, the A is the biggest, the C is in the middle, and the B is the smallest. There are many other differences, including the chassis and overall structure of each class.

Class A motorhomes have more square footage since they’re wider and longer; Thus, they’ll need the biggest dehumidifier. If you get a small unit that’s not big enough for the RV, you’ll have to empty the tank far too often. Cutting corners will leave you frustrated and the dehumidifier will be overworked.

For reference, I’ll show you the size of the RV compared to the square footage of a dehumidifier that you’ll need:

Motorhome ClassRV Square FootageDehumidifier Square Footage
Class A245 to 385 sq. ft.250 to 450 sq. ft.
Class B126 to 168 sq. ft.125 to 200 sq. ft.
Class C240 to 265 sq. ft.250 to 300 sq. ft.

(Source: Tripsavvy)

As you can see, it’s recommended that you get a dehumidifier that’s a bit bigger than the RV’s requirements. Overcompensating will allow you to deal with humid days so you don’t have to empty the tank too often.

How Big is the Dehumidifier’s Tank?

According to the University of Illinois, warm air can hold more water than cold air. Despite wet, rainy days, you’ll have a worse time emptying a dehumidifier in warm, humid climates. Most of the southern states in the US have a lot of warm humidity because they’re positioned right by the ocean.

Dehumidifiers come in all shapes and sizes, but there’s no point in getting one that’s too big. I mentioned that a slight overcompensation is wise, but you shouldn’t get anything more than 100 square feet bigger than your needs.

7 Best Dehumidifiers for RVs

However, the size of the dehumidifier’s tank is a different story. The tank determines how many ounces of water are held before it’s time to empty the unit. More storage capacity means less time emptying and more time enjoying the passive effects of the machine.

Most RV dehumidifiers range between eight to 128 ounces, some of which go a bit over. If you want to save time and empty the tank less often, opt for a bigger model. For example, a couple of the dehumidifiers on the list have an 18-ounce storage tank, whereas others have a 68-ounce tank.

Note: If you have a small RV and you’re camping in a dry climate, you won’t need a massive tank. It doesn’t hurt to have a big tank to empty it less, but it’ll fill up about once every few days.

Don’t Forget the Price

Dehumidifiers can be super expensive if you’re buying several of them for a house. Some people prefer to get a full-home dehumidifier, costing thousands of dollars. Fortunately, RV dehumidifiers are fairly cheap and easy to maintain. Nevertheless, you should keep all of the financial aspects in mind.

  • Initial cost: If you want a decent dehumidifier for your motorhome, it’ll cost between $30 to $100. Anything less won’t be sufficient for storage or square footage.
  • Maintenance: This portion is cheap, but you should expect to clean the interior with a few wipes and check the electrical connections regularly. It shouldn’t cost more than $5 or so per month.
  • Additional units: If you want to get a dehumidifier that uses silica beads, it’d help to assist your primary RV dehumidifier. These run between $5 to $20.
7 Best Dehumidifiers for RVs

As you can see, dehumidifiers aren’t too expensive when you’re shopping for your RV. I’ve found that, with proper maintenance and cleaning, you can make them last for plenty of years.

Our Top Picks

Best Overall: Pro Breeze Electric Mini Dehumidifier

If you’re able to find a well-rounded dehumidifier, you can take in with you on all of your RV trips. You should keep an eye out for the aforementioned specs, as well as the durability and effectiveness of the unit. The Pro Breeze Electric Mini Dehumidifier is the best bang for your buck on the market.

It’s designed to pull up to 18 ounces of water out of the air per day, making it about as efficient as it gets. You’ll also enjoy the 52-ounce water tank that allows you to empty it every few days without too much of a hassle. This dehumidifier is good for spaces up to 250 square feet, making it a top-notch selection for RVs of all sizes.

This model might be at the top-end of the price range, but safety features like the auto shutoff system and LED indicators make it well worth the cost. It tells you when it’s time to empty the tank so you don’t have to check it every few hours.

Bottom Line: The Pro Breeze Dehumidifier takes the cake when it comes to RV units. You’ll be able to rest peacefully knowing that mold and rot won’t be a part of your maintenance routine. Plug it into a 12V outlet and let it do its job.

Pros

  • Comes with a good-sized 52-ounce water tank. It’s a great compromise that increases the time between maintenance and too much weight.
  • The 18-ounce daily fill-up makes it an efficient model. Compared to similar dehumidifiers, I’ve found this amount to be far above average.
  • The LED lights take the stress away. You don’t have to worry about it overfilling or not doing its job.
  • The unit is designed for the mid-range of RV square footage. If you’re unsure what size you need, it’s the one to go with.

Cons

  • Unfortunately, it might not be big enough for extra-large RVs. Class A’s can get fairly massive, so you should check the size beforehand.
  • It makes a bit of white noise. Although it’s still on the quiet side, there are plenty of dehumidifiers that make less of a sound.

Best for High-Humidity Environments: LONOVE Dehumidifier

If you live or travel in a place that has high humidity, then you’re going to have to upgrade your dehumidifier. Fortunately, the LONOVE Dehumidifier is the perfect size for moisture-filled environments. Again, most states in the southern portion of the country are humid, as are cities near lakes, rivers, and oceans.

The LONOVE Dehumidifier is designed for a 450 square foot area, making it a great purchase for any RV size. Whether you’re traveling in a small class B or you’re parked in a massive 45-foot class A motorhome, this unit will do the trick.

One of the best features of this dehumidifier is that it comes with a drain hose that you can use instead of removing the tank. Hook the hose into the 68-ounce water tank, set the other end out of the vehicle, and drain the liquid. When you’re done, remove the drain and it’ll start pulling moisture from the air again.

Bottom Line: If you need a dehumidifier that does it all, I believe that this one will be an excellent pick. It has more than enough capacity for large RVs, not to mention the undeniably convenience of a draining hose.

Pros

  • It’s big enough for any RV in the world. It’s rare that you’ll find a motorhome over 400 square feet, so this tank will do very well.
  • You don’t have to drain it too often. The 68-ounce water tank allows you to relax without having to empty it more than once every few days.
  • There’s a drain hose with the package. No need to remove the tank when it’s time to get rid of the moisture.
  • This tank is very silent for the size. The company claims that it stands between 35 to 45 dB, making it about the level of white noise.

Cons

  • Due to all of its impressive capabilities, this dehumidifier is one of the most expensive models on the list.

Best for Small RVs: SEAVON Electric Upgraded Dehumidifier

Do you have a small-sized motorhome? If so, you don’t need to spend too much money trying to get the biggest dehumidifier on the market. The SEAVON Electric Upgraded Dehumidifier is an excellent option that’s affordable and ideal for smaller vehicles. It works for RVs up to 195 square feet, so preferably a Class B.

The reservoir holds up to 16 ounces of water before it has to be replaced. As long as you’re not traveling in a super humid climate, you’ll be able to empty it once every one to two days. The removal process is as easy as sliding the bottom tank off of the unit, dumping the water, and replacing it.

During the extraction process, this quiet dehumidifier can pull up to 9 ounces from the air per day. If it’s not too humid, then it’ll go around 4 to 5 ounces per day. Make sure you place it in an open area to maximize its potential.

Bottom Line: The SEAVON Dehumidifier might be small, but it’s no joke if you have the right-sized RV. It’s quiet, efficient, and incredibly easy to maintain. No more lugging around a massive water reservoir!

Pros

  • This compact device can fit almost anywhere. If you’re trying to minimize the space consumed by a dehumidifier, you’ll enjoy the 6.5 x 5.3 x 11.3-inch design.
  • It pulls more than enough water daily. Although it’s not as high as other dehumidifiers on the market, it’s ideal for small vehicles.
  • Quiet operation ensures easy sleeping. You don’t have to hear a loud buzz when you’re running this unit.
  • It includes LEDs and an auto shutoff switch. This next-level dehumidifier tells you when it’s time to empty it.
  • Compared to other models, it’s very budget-friendly. You can get this product for less than the price of a tank of gas.

Cons

  • It’s not as efficient as other devices. At only 9 ounces per day and an 18-ounce tank, the numbers aren’t as impressive.
  • This dehumidifier is too small for anything bigger than a class B RV. You won’t be able to use it on anything else, even a class B+.

Best for Large RVs: Letsport Dehumidifier

On the other hand, you might want to drive your 45-foot class A around all summer without worrying about humidity. Moisture and warmth combine to create a plethora of disasters, but you’ll have it under control with the Letsport Dehumidifier. Throughout my research, I’ve found that customers love the massive tank and moisture-pulling capabilities.

The water reservoir is 68 ounces, making it one of the biggest RV dehumidifiers that you’ll find. It can pull between 24 to 34 ounces of water from the air every day. When it’s time to empty it, there’s a bright LED light that brightens up the unit.

With a 480 square foot capacity, there might not be a better choice for a big RV available. You can use this for a class A, B, or C RV without any problems. Set it up in any open room when you’re parked and watch it work its magic.

Bottom Line: A small dehumidifier won’t do enough when you’re driving a large motorhome. You need something big enough to handle the moisture in the air. The good news is that this product has an adequate tank size and it pulls a ton of water throughout the day.

Pros

  • It’s big enough for any motorhome. You can take the guesswork out of figuring out what size you need by grabbing this dehumidifier.
  • You can empty it quickly thanks to the LED warning light. It shuts off and tells you rather than running and overflowing.
  • This model has one of the highest moisture rates in the lineup. The company claims that it can reduce the relative humidity by up to 35%.
  • It’s energy-efficient. It only consumes about 48 watts per hour, which is far less than the vast majority of home appliances.
  • Despite the size, it runs less than 40 dB. You probably won’t find a quieter dehumidifier for the quality and capacity.

Cons

  • Removing the tank can be a pain. Since there’s so much water, you’ll have to empty a lot more than a small dehumidifier.
  • Long-term storage can cause mildew. Make sure you clean the tank regularly.

Best Low-Noise Solution: ALROCKET Dehumidifier

Are you tired of loud dehumidifiers? There are already enough noise makers in a motorhome, so don’t think that you’re forced to get a loud model. The ALROCKET Dehumidifier is incredibly quiet, but it doesn’t sacrifice power. It has a 35-ounce tank that can fill itself in a couple of days, making it above average on all counts.

This dehumidifier is designed for 260 square feet, meaning you’ll be able to use it for class B’s or class C’s and A’s that are on the small end. Set it out in the open and watch as it pulls plenty of moisture from the air. The silent process is a part of the reason that there are thousands of positive customer reviews.

If you’re chasing energy efficiency, then you’ll appreciate the 40 watts per hour consumed by this unit. It uses less electricity than most dehumidifiers, it’s as quiet as it gets, and it fits most motorhomes; What’s not to love?

Bottom Line: This quiet, low-energy dehumidifier continues to impress customers every day. Whether you’re trying to cut back on the noise or you want a stylish design, this product has it all. Note that it’s under three pounds and it measures in at 5.7 x 5.7 x 8.9 inches.

Pros

  • It’s very quiet compared to other dehumidifiers. If you’re a light sleeper, then there’s no question that the 40 dB sound will be a welcome surprise.
  • It’s fairly compact. The aforementioned dimensions allow you to place this product almost anywhere in the RV.
  • You can use it in most RVs. It’s small, but it’s big enough for 260 square feet of motorhome space.
  • Despite its tiny size, it boasts a high water absorption rate. It can pull up to 16 ounces of water per day.
  • It has a simple design. One button is the only thing that you have to work with to operate this dehumidifier.

Cons

  • You won’t be able to use it with mid-sized to large class A or C RVs. At 260 square feet, this product only works for smaller motorhomes.
  • It’s a bit on the slow side. You’ll have to remain patient since it doesn’t pull water very quickly. The previously mentioned 16-ounce rate only applies in high humidity when it’s in an  open space.

Best for Low-Maintenance: Electric Mini Dehumidifier by HAUTURE

If you want to set it and forget, then my favorite choice is the HATURE Electric Mini Dehumidifier. It’s fairly quiet, but the real magic lies in the ease-of-access and use. Much like the previous model on the list, this product only has one button. Turn it on and off in less than a second, and keep an eye on the tank capacity with an LED indicator light.

When you’re ready to empty the 20-ounce tank, simply slide out the tray, pour the water, and replace it. It’s as easy as it gets. It works very well in a wide range of temperatures, so don’t worry about freezing or overheating the unit. If it gets too low or high, it’ll automatically shut itself off.

There’s a fan inside of the dehumidifier that maintains the unit. It keeps the whole dehumidifier cooled down, which prevents mold and mildew from growing inside. It only puts out 33 dB, making it slightly louder than the ultra-quiet ALROCKET dehumidifier mentioned above.

Bottom Line: You don’t have to deal with dust, excess moisture, mold, mildew, or anything else with this high-end, low-cost dehumidifier. In comparison, most other units have dust shields that have to be cleaned and they lack internal fans for cooling purposes.

Pros

  • There’s a 30-day money back guarantee. If you don’t like the dehumidifier, you can rest with the peace of mind knowing that you can return it.
  • It’s super quiet and low-maintenance. In fact, it’s the second quietest dehumidifier on the list.
  • The entire top plate is an LED light. It shines green when it’s pulling moisture and it blinks orange when it needs to be emptied.

Cons

  • It’s rated for 170 square feet. Sadly, that means you can only use it for small class B RVs.

Best for Portability: Ivation 13-Pint Small-Area Desiccant Dehumidifier

You don’t have to get a massive, awkwardly-shaped dehumidifier to keep your RV free of moisture.The Ivation Desiccant Dehumidifier has a sleek shape that’s narrow and tall. When you’re not using it, you can slide the 10.59 x 6.85 x 17.52-inch dehumidifier into a closet or under a table.

There’s an LED screen on top of the unit that allows you to control everything. You don’t need to wonder what the capacity is since it’s listed right on the face. It can be used in RVs up to 270 square feet, which covers all RVs and most sizes.

The temperature range goes from 33 to 104 degrees Fahrenheit, which is slightly above average. There’s also a carrying handle on top that lets you bring it from one room to another, which is a major part of its portability.

Bottom Line: The Ivation Dehumidifier maintains a unique shape that makes it easy to store and deploy whenever you’d like. You can adjust the fan speed, humidity, set timers, and more all from the LED screen.

Pros

  • The tall, narrow size is ideal for many RVers that want to store the dehumidifier in tight spaces.
  • You can control everything with the modernized LED screen. Set anything you need to with the click of a button.
  • It’s ideal for most RVs. As I detailed earlier, 270 square feet is enough for small class A and C motorhomes, but it’s more than enough for any class B.

Cons

  • Since it has a wide face, you’ll have to clean the dust screen quite often. Remove it, brush it off, and slide it back into place.
  • The draining hole on the back of the unit has been known to leak after a few months of heavy usage. You might have to replace the plug when this happens, but it’s not too expensive.

Final Thoughts

Throughout my research, I’ve found the Pro Breeze Electric Mini Dehumidifier to be the best choice for most RV owners. Whether you like it for the large water tank or the quick absorption capabilities, it’d be a good fit for almost any RV.

However, you might like other RV dehumidifiers if:

  • You’re traveling in a humid environment, choose the LONOVE Dehumidifier
  • Your RV is small and you don’t need a big unit, choose the SEAVON Dehumidifier
  • You have a big RV that needs a large model, get the Letsport Dehumidifier
  • There’s too much noise coming from most options, purchase the ALROCKET Dehumidifier
  • You’re tired of dealing with maintenance issues, try the HATURE Mini Dehumidifier
  • Portability is at the top of your list of concerns, grab the Ivation Dehumidifier

Check out the Pro Breeze Dehumidifier on Amazon here!

Steve Rajeckas

Steve Rajeckas is an HVAC hobbyist with an avid interest in learning innovative ways to keep rooms, buildings, and everything else at the optimal temperature. When he's not working on new posts for Temperature Master, he can be found reading books or exploring the outdoors.

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