The many activities performed within your RV’s limited space, including cooking, cleaning and showering, can result in water vapor and condensation buildup. High levels of water vapour create a lot of discomfort in what was meant to be a cozy second home during long trips, and also deteriorates soft furnishings inside your RV. Worry not, you only need to spend a reasonable amount for the best dehumidifier for RV to achieve comfort on the road.
While you might think that simply opening your window will solve the problem, this solution isn’t always available, for instance in winter or when it’s raining or humid outside. Getting a dehumidifier for RV will solve this problem all year round, and it can save you thousands of dollars in damage from mold and excess moisture.
To get you familiarize yourself with the market for motorhome dehumidifier, we have covered everything you need to know about this essential accessory so that you can make the best investment for your budget and travel needs.
This comprehensive guide will outline dehumidifier for RVs benefits, the different types, most important buying factors, and a handpicked list of the very best RV dehumidifier models on the current market. Each model will come with highlighted features and both pros and cons so that you can easily compare and pick out the one most suitable for your preferences and wallet.
As bonuses, you will find at the end of this article frequently asked questions plus handy maintenance tips. Rest assured that there is certainly something for every camper here.
- Best RV Dehumidifiers Comparison Chart
- Benefits of a Dehumidifier for RV
- Reviews Of Top-Rated RV Dehumidifiers
- 1. Pro Breeze Electric Mini Dehumidifier
- 2. hOmeLabs Small Space Dehumidifier
- 3. Frigidaire FFAD7033R1 Dehumidifier
- 4. hOmeLabs Energy Star Dehumidifier
- 5. Eva-dry Edv-1100 Electric Petite Dehumidifier
- 6. Keystone KSTAD50B Portable Dehumidifier
- 7. InvisiPure Hydrowave Dehumidifier
- 8. Hysure Quiet and Portable Dehumidifier
- 9. KEDSUM Electric Small Dehumidifier
- 10. Eva-dry E-333 Renewable Mini Dehumidifier
- Types of Dehumidifiers for RVs: Comparison
- How to Choose The Best Dehumidifier For Your RV
- Best Dehumidifier Brands
- Ways to reduce humidity inside an RV
- FAQs About Dehumidifiers For RV
- Keeping Dehumidifiers In Good Condition
- Need More Gear Advice?
Best RV Dehumidifiers Comparison Chart
|No||Best RV Dehumidifiers||Price||Our Reviews|
|1||Pro Breeze Electric Mini||$$||*****|
|2||hOmeLabs Small Space||$$||****|
|4||hOmeLabs Energy Star||$$$$||*****|
|5||Eva-dry Edv-1100 Electric Petite||$$||****|
|6||Keystone KSTAD50B Portable||$$$$||*****|
|8||Hysure Quiet and Portable||$$||*****|
Benefits of a Dehumidifier for RV
An RV dehumidifier removes excess moisture from your RV’s interior, leaving it dry, cool and comfortable. Overall, the RV dehumidifier is one of the most essential devices to have in your vehicle because it can purify the air and make it safer and cleaner for breathing. If you have asthma, investing in the best dehumidifier for RV will be a wise decision.
So how does an RV dehumidifier remove excess moisture from the air? Air from your RV will get drawn into the dehumidifier’s vent which then passes the air over cold coils. This action will create condensation on the cold coils as the warmer air hits them. The condensation that does form will then drop into a bucket or water reservoir.
And from there is where the process gets different depending on the type of dehumidifier you buy. The more rudimentary bucket models will collect the water in a bucket that gets manually emptied when it becomes full.
In comparison, the more technologically advanced bucket models will have an automatic shut off when it senses the bucket is full. And some other types might have a window you can peak into to keep track of the water accumulating in the bucket.
Some models won’t even have a bucket, and the water will need to be drained away. You can do this either by having a hose mounted at the bottom of the unit and then positioned downwards toward a drain or through a pump system.
Keeps The Interior Cooler
Excess humidity will make the inside of your RV seemingly hotter and less bearable, prompting you to crank up the air conditioner so that you can survive those hot summer days. Simply investing in the best RV dehumidifier, especially one that is energy efficient, will keep the interior of your motorhome cool and comfortable, all the while letting you save on your electricity bills.
Prevent Mold and Keep The Air Fresh
If you’re RVing in a hot, humid climate, they’ll remove harmful humidity or condensation that can get trapped inside your rig and cause mold, dust mites, fungus, and bacteria buildup. They can cause a variety of nuisances: ruining your clothes, furniture, walls, floors, and contaminating the air we breath, potentially causing breathing problems and allergic reactions. They can also cause that unpleasant damp, musty smell.
An RV dehumidifier will effectively make sure the interior of your RV is safe from mold and moisture, thus will look their best and last you more trips on the road. This can potentially save you thousands of dollars for repair, maintenance and replacement or interior structure and furnishings.
Most importantly, you will be able to enjoy fresh air and comfort, thus stay healthy to get the most out of your RV life. After all, if you seek to enjoy life by traveling the world in your RV, there’s no reason you should be stuck in your RV filled with musty, humid air.
Aside from protecting your RV in hotter climates, if for some reason you plan on RVing somewhere cold or storing your RV for a long time, the dehumidifier can also help regulate the moisture that might accumulate. Excess moisture in severe winter can cause serious damage to your RV as well.
RV Dehumidifier vs. Household Dehumidifier
The 12 volt dehumidifier for RV is a specially designed and manufactured dehumidifier that is suitable for mobile homes. The RV dehumidifier thus has just the right capacity suitable for RV spaces, therefore it can be more energy efficient than a household dehumidifier.
RV dehumidifiers are more compact. Plus, many models of RV dehumidifiers are also made with a non-slip base, which is essential given you don’t want these flying all around your RV.
For one, a household dehumidifier uses a lot more energy, and is substantially more expensive.
If you get a household unit for your RV, it will end up being very inconvenient and much more expensive than getting an RV one. In other words, you’d be buying a product that’s over-equipped for the job you need it to do. It’d be overkill and an unnecessary waste of your money.
Reviews Of Top-Rated RV Dehumidifiers
Here, you will find the 10 finest products with highest ratings from seasoned RVers, available for purchase on the market today:
1. Pro Breeze Electric Mini Dehumidifier
- Rated for high humidity
Why This Is The Best
Powerful and portable, Pro Breeze Electric Mini Dehumidifier is the best dehumidifier for RV in terms of all-around performance. Packing a 16-ounce water tank as well as a coverage of 150 square feet, the Pro Breeze unit performs extremely well on the average recreational vehicle. Thanks to its humble profile, the dehumidifier could be placed virtually anywhere on your rig. Additionally, the lightweight nature of the dehumidifier allows you to move it around as you see fit without much difficulty.
In use, the model from Pro Breeze incorporates the latest thermo- electric cooling technology which works without requiring a compressor. Because of that, the dehumidifier is able to cut noise down to the bare minimum. That is a major plus if all you want is a small dehumidifier for RV with whisper-quiet operation. Aside from that, the dehumidifier also features an automatic shutoff function and LED light notification for water drainage so it’s quite simple to handle.
On the downside, Pro Breeze Electric Mini Dehumidifier is unable to work at temperatures below 41 degrees Fahrenheit, a considerable limitation for Rvers in cold climates. Moreover, a couple of customers also complain that the endurance of the dehumidifier often varies greatly from product to product. Some hold themselves together for years on the road while others break shortly after purchase. Last but not least, the Pro Breeze dehumidifier tends to take longer to remove excess moisture compared to its competitors.
Awesome little DeHumidifier!
Just started full time RV living, and we immediate found a condensation issue! Bought one for the back room ( 35 ft trailer with separate rooms on each end) after just a couple of days with it we bought 2 more! They are quiet, efficient and have completely eliminated the moisture problem! ( We live in the area of Oregon where it rarely is NOT raining!) Strongly recommend!!Shared by Elizabeth Brown – an RV camper
- Reasonable price
- Excellent portability
- Tank capacity is nice
- Less than ideal temperature tolerance
- Inconsistent durability between products
2. hOmeLabs Small Space Dehumidifier
- Energy-efficient adapter
- Low noise thermoelectric peltier module
- LED light indicator
Why It’s An Editor’s Choice
Capable of removing water vapor in the air within a few moments, hOmeLabs Small Space Dehumidifier is a highly regarded product. Actually, the unit from hOmeLabs receives a lot of praises from various RV dehumidifier reviews for its fast working pace. For most of the time, the dehumidifier would bring the humidity in the interior to your desired level in just a blink of an eye. Optimized for spaces up to 150 square feet, the dehumidifier should be able to match the needs of many RVers nowadays.
Knowing that no one wants to deal with noisy dehumidifiers, hOmeLabs gives its model a noise reduction thermoelectric peltier module. As a result, the dehumidifier makes negligible sounds in operations which creates few disturbances to the interior, especially at night. Like other products on the market these days, the dehumidifier automatically shuts down so you don’t have to worry about tank overflowing. In fact, the Led light indicator on the dehumidifier shall be lit up if the water tank needs to be drained.
For drawbacks, the lifespan of hOmeLabs Small Space Dehumidifier in the field fluctuates between products. Furthermore, some units seem to be already damaged on arrival as they completely fail to absorb moisture in the atmosphere. Just as importantly, the shipping service disregards instructions from the manufacturer by delivering the dehumidifier to users in awkward positions.
We are currently fulltiming in an RV and with all the rain we’ve had this summer, having something for all the moisture is a MUST! This little dehumidifier is a CHAMP. It’s a bit small for our RV (we really need something that’s for twice the size) – BUT that doesn’t negate its ability to pull moisture from the air. (Plus we hate to get something bigger as we’re only in here for a few months). Anyway, if you have an RV that you travel in, or a bathroom that needs a little extra help with pulling the dampness out of the air – this is the unit for you. Easy to use, empty, and hide away. Handy little light tells you when its full. Perfect for any of your compact needs!Shared by My2cents
- Straightforward operation
- Low energy consumption
- Quality control must be improved
- Mediocre delivery service
3. Frigidaire FFAD7033R1 Dehumidifier
- Pull-out water tank
- Ready-select electronic controls
- Continuous operation is possible
Why It’s An Editor’s Choice
Made specifically for heady duty dehumidifying, Frigidaire FFAD7033R1 Dehumidifier proves itself to be a fairly competent albeit expensive model. On average, the Frigidaire model could remove up to 70 pints worth of vapor in a single day, an impressive amount. Therefore, the dehumidifier is often considered as the best dehumidifier for RV available for purchase in terms of moisture removed. Being a 24-hour unit, the dehumidifier would have no trouble working around the clock to keep humidity in your recreational vehicle at a reasonable level.
About handling characteristics, the dehumidifier from Frigidaire boasts integrated handles and caster wheels which means its portability is truly superb. In most of the cases, it’s a breeze for RVers to move the unit from room to room in order to match current demands. Because the dehumidifier utilizes a transparent glass ring, you only have to take a quick glance to determine the water level in the tank at times. Due to the presence of plain, no-nonsense electronic controls, you should be able to manipulate the performance of the model as you see fit.
Regarding its faults, the energy consumption of Frigidaire FFAD7033R1 Dehumidifier is noticeably higher than that of the ordinary units. Moreover, while the powerful fan of the device tackles moisture effectively and efficiently, it might get noisy now and then. The placement of the built-in sensor is barely acceptable as it often causes errors after some time in use.
This unit sits perfectly on top of the counter of our RV and the water drain outlet is coupled with a short hose to drain directly into the sink drain, making it possible to leave this unit installed and in operation all the time. Humidity is the largest single hidden environmental threat in a modern RV, where mold can grow and make a vacation turn into a hospital visit. Keeping humidity low during use and storage is imperative.Shared by D. Francis
- Intuitive setup
- Forgiving handling
- Responsive customer service
- High acquisition cost
- Minor reliability issues
4. hOmeLabs Energy Star Dehumidifier
- Energy Star certified
- Integrated wheels and handles
- Drain hose outlet
Why We Love It
Engineered to get rid of moistures without racking up the utility bill, hOmeLabs Energy Star Dehumidifier is arguably the best dehumidifier for RV energy-wise. In the span of a day, the unit from hOmeLabs could remove 30 pints worth of moisture from the atmosphere, more than enough for usual RVs. Additionally, the dehumidifier also targets bacteria in the humid air which allows it to reduce odors or allergens. Built to withstand abuses in use, the model shall remain operational for a long time.
For control, the hOmeLabs product employs a straightforward interface that everyone would be able to master from the get-go. In most cases, all you have to do is to set the preferred moisture setting and let the dehumidifier run. Once the tank is full, the unit is going to shut down automatically so overflowing is less than an issue. If you don’t have the time and patience to manually drain the tank, the dehumidifier also supports continuous draining through its drain hose outlet. In order to set that up, you need a garden hose and some Teflon tapes.
Like everything else money can buy on the market nowadays, hOmeLabs Energy Star Dehumidifier carries its own set of flaws. The auto-defrost function of the model is somewhat mediocre as it comes on and off intermittently regardless of temperatures. Also, if the plastic base of the dehumidifier is damaged, the entire unit must be replaced.
I got about 1 solid month of nonstop use prior to fall arriving and now it is on and off. Excellent performance. Coverage of the space is well within its rating for sq ft, Sound level is not bothersome as it sits behind our dining table in our RV. It seems to match our humidistat within about 3-4% for the interior of the rig vs its display. I had to set it at 50% vs 45 to get a solid 45-48% in the rig. With windows open on the cooler days it was pulling about a bucket out for the day keeping it around 50% in the rig so we really enjoyed being able to keep the windows open some for fresh air which means AC off so lower noice in the camper.Shared by Tim H
Size fits our space well, easy to wheel out and dump. The control setting for us was Continous = Off and 50% . What I did notice was that it was right for space size of the RV so I don’t get a lot of hot air running out of it during its cycle. When it was warm coming off the compressor either the AC or outside air compensated. Highly recommend for 300 sq ft RV.
- Compact and mobile
- Support continuous draining
- Informative instruction manual
- The compressor is slightly noisy
5. Eva-dry Edv-1100 Electric Petite Dehumidifier
- Plug and play design
- Renewable reservoir
- LED light indicator
Why We Love It
Portability happens to your primary criterion while shopping for dehumidifiers? Is that is so, you should give Eva-dry Edv-1100 Electric Petite Dehumidifier a look. Known as one of the lightest thermo-electric dehumidifiers, the unit from Eva-dry is the ideal camper dehumidifier for RVers that desire high mobility. You could move the model as you like without trouble thanks to its superb handling. A combination of high manufacturing standards and premium-grade materials results in a long lifespan.
In use, the Eva-dry dehumidifier operates in a quiet manner so you would be able to sleep at night. Because of the rather low energy draw of the model, you don’t have to face a hefty bill at the end of the month. As the dehumidifier is ready to use out of the box, you only have to plug it in and wait. When the condensation bucket fills up, the unit shut down immediately and the “Full” LED light indicator will light up. The incorporation of renewable reservoir permits the dehumidifier to eliminate odors as well as fungus.
On the downside, Eva-dry Edv-1100 Electric Petite Dehumidifier is mostly good against average humidity levels. Since it’s a light-duty model, the Eva-dry dehumidifier might seem a bit lackluster in high humidity regions. Some users also feel that as time passes by, the noise level tends to increase.
We bought this little gem for our RV. I sat one night with my husband and read hundreds of reviews for MANY different dehumidifying products. This little beauty is perfect. We have a 31 ft travel trailer and on our first purchase we bought two, knowing we had a lot of space to cover. They work perfectly. Quiet little hum. My only issue is remembering to empty them! I honestly could not believe how much moisture we were gathering in our camper until we got these.
I just ordered two more, just to be safer. With such a large trailer, with no room for a larger unit, we are very pleased to have found these. Now I will have one in our front bedroom, one in the back bedroom, one in the bathroom and one in the kitchen. Don’t be jaded by the bad reviews on this little bad boy. It works great, and like I said I just ordered two more because of it.Shared by Nicole
- See-through water tank
- Great value for the price
- Collect moisture pretty well
- The working pace is slightly low
- Ill-suited for heavy-duty dehumidifying
6. Keystone KSTAD50B Portable Dehumidifier
- Removable dust filter
- Continuous draining is available
- Normal, turbo and auto-defrost
Why We Love It
With the ability to remove up to 50 pints of water vapor per day from spaces as large as 3,000 square feet, Keystone KSTAD50B Portable Dehumidifier is the best dehumidifier for RV in terms of coverage. Being an Energy Star unit, the Keystone model expertly expels moisture from the RV interior while drawing the least power. That is why by keeping the dehumidifier around, you could leisurely regulate humidity on your rig at all times without having to pay a fortune.
For operation, the dehumidifier from Keystone employs an intuitive control scheme which makes it simple to use to most RVers. Due to the straightforward LED display, it’s a breeze for you to program the dehumidifying settings as you like. As the unit incorporates a 24-hour timer, it’s capable of facilitating 24/7 removal of vapor. For convenience sake, the dehumidifier possesses a draining outlet in order to support continuous draining. Besides that, the presence of the auto-defrost function makes sure that the model works as usual in chilly weather.
On the downside, Keystone KSTAD50B Portable Dehumidifier is slightly noisy in use to some users. Additionally, the water bucket proves slightly troublesome to work with as it’s unable to stand up on its own.
Great for RV Moisture Control
Put this item in my RV to eliminate moisture from weather and it works great. I no longer have any mildew growing in my RV from high humidity in my area of living. It controls moisture like it says and does it well. I am using a hose to let it drain into my sink. I put this dehumidifier on the kitchen counter and it drains to my kitchen sink so I don’t have to watch it from filling up and stopping. It runs as needed and shuts off when not needed. I am happy with this purchase for my RV moisture control vs other options of using buckets of stuff to replace and drain often.Shared by Mr. Dale A. Stagg
- Outstanding portability
- Great capacity
- No included drainage hose
- Below average customer service
7. InvisiPure Hydrowave Dehumidifier
- Auto shutoff
- Thermo-electric cooling technology
- Support continuous drainage
Why We Love It
If you desire a lightweight, highly-compact dehumidifier for travel trailer, InvisiPure Hydrowave Dehumidifier is exactly what you need. Though it looks quite modest at first glance, the unit from InvisiPure offers a coverage of 300 square feet as well as a removal rate of 1.7 pints of moisture a day. Such characteristics allow the model to match the needs and requirements of conventional RV setups. In addition to that, the dehumidifier functions without a compressor so it’s able to work quietly in most cases.
Like other modern-day units on the market, the InvisiPure product features an auto-shutoff function that ceases operation once the water tank is full. It takes just a moment to empty the liquid inside the tank and resume operation. Of course, if necessary, attach the water tank to a garden hose for continuous draining. Thanks to its portable design, the dehumidifier could be moved from spot to spot in your vehicle without much difficulty. When you purchase the unit, you would receive a 1-year warranty and lifetime manufacturer support.
For drawbacks, the tank of InvisiPure Hydrowave Dehumidifier is fairly limited compared to many of its competitors in the business. Furthermore, you have to invest in a separate hose if you want to let water in the tank drain continuously.
Excellent for RV/camper
I bought this to use in our 32’ travel trailer that sits at a seasonal campsite with constant power. The tank has a place to connect a 3/8” hose which I got a few ft at local hardware store and let it drain into the sink. We haven’t had any mildew issues at all this summer like we did in the past. Works great and easy to stow in a cabinet when we are there and don’t want it in the way. Fan hardly noticeable when runningShared by Amazon Customer
- Silent operation
- Efficient and quiet
- No control on humidity levels.
- Inconsistent performance
8. Hysure Quiet and Portable Dehumidifier
- Low energy consumption
- Indicator light
Why We Love It
Quiet operation, compact body and energy-efficient, Hysure Quiet and Portable Dehumidifier is considered to be the best dehumidifier for RV at its price range. Packing a 500-ml tank and a dehumidifying volume of 250 ml/day, the Hysure unit performs admirably in small-sized RVs. Aside from that, as the model employs no chemical substances in its entire construction, it’s an environmentally friendly product. The dehumidifier reaches its peak performance at 86 degrees Fahrenheit and 80% RH (short for Relative Humidity).
In use, the dehumidifier from Hysure proves to be highly adaptable; you could put it in bedrooms, bathrooms, crawl spaces,… Its modest profile let the unit fit a variety of RV settings without much difficulty. To prevent overflowing, the unit automatically halts its operation when the water tank is full. At that point, the Led indicator shall light up in order to notify that you have to empty the tank. Because of the low noise nature of the model, it creates rather few disturbances to the daily life of RVers.
About its weakness, Hysure Quiet and Portable Dehumidifier seem to have an inconsistent lifespan: some products last pretty long while others fail shortly after purchase. Also, the plug is so sensitive that the dehumidifier might turn off after the lightest touches which is somewhat annoying.
Perfect for our RV!
We noticed a problem with moisture build up in our RV. Every morning I would have to wipe condensation off of the windows. We had picked up damp-rid and that didn’t seem to be of any help. After setting up the Hysure we noticed it was filling up with water. This little baby was hard at work. The plus side to using it is that we now have distilled water to recycle. I boil it before bottling it into the very tool we often use that helped create the moisture issue, that being a hand held steamer. So the Hysure not only works well, it will pay for itself in saving costs of buying distilled water. The only bad thing I have to say about it is.. I wish I had bought it sooner! Ever knock over a tub of damp-rid? Mmhmm….not pretty! I could have saved myself the disappointment and the clean up. The Hysure is compact, light weight, takes up very little counter space. We’re very pleased with our purchase.Shared by Wagner713
- Quiet in use
- Reasonable price
- Low energy draw
- Sensitive plug
- Barely adequate longevity
9. KEDSUM Electric Small Dehumidifier
- Safety auto-shutoff
- No compressor
Why We Love It
Available in 3 variants (500 ml, 700 ml and 1500 ml), KEDSUM Electric Small Dehumidifier is a robust product that gets rid of moisture on RVs effectively and efficiently. As it receives approvals from RoHS, FCC and CE, the KEDSUM unit is essentially the best dehumidifier for RV regarding safety. In addition, the ideal operating temperatures of the model range from 59 up to 86 degrees Fahrenheit, good enough in most cases. But once the temperature in the surrounding drops below 41 degrees Fahrenheit, the dehumidifier stops working.
Thanks to the use of Thermo-electric cooling technology (Peltier), the product from KEDSUM is able to keep noise levels to the minimum in use. That is a major plus if you really want to sleep and rest in peace. Considering the fact that the unit terminates operation if it detects a full tank, overflowing is less than an issue. Through the Led light indicator on the dehumidifier, it’s easy to tell when you have to drain the tank. Because of its excellent portability, the model possesses forgiving handling.
On the downside, users of KEDSUM Electric Small Dehumidifier occasionally report malfunction sensors that fail to notice a full tank. Also, the dehumidifier needs to be restarted manually if its power supply is suddenly cut.
PERFECT for RV living.
I am a full time RVer and this is the perfect size to handle random humidity in my 35′ rig. Bathroom moisture and kitchen odors are gone! Just discovered a small leak in my roof, it is drying the room beautifully. A must have for an RV where unchecked moisture leads to lingering odor and mold. Easy to operate, auto shut off, and easily emptied.Shared by Lisa Prosen
- Make negligible sound
- Multiple size options
- Helpful customer service
- A bit slow
- Fluctuated lifespan
10. Eva-dry E-333 Renewable Mini Dehumidifier
- Spill and mess-free
- Require no batteries and cords
Why We Love It
Being the most compact model on the market these days, Eva-dry E-333 Renewable Mini Dehumidifier is the best dehumidifier for RV in terms of space-saving. RVers would be able to mount the Eva-dry unit anywhere they want in the blink of an eye. Being a renewable design, the dehumidifier should last between 20 and 30 days before renewing is required. Generally speaking, the unit could remain operational for extended periods of time (10 years on average). As the gel silently absorbs the moisture from the atmosphere, the dehumidifier makes no noise.
For operation, the model from Eva-dry only needs to be plugged in for around 8 – 10 hours every now and then. Besides that, the dehumidifier shall expel water vapor in the interior of your recreational vehicle on its own initiative while keeping the utility bill reasonable. Engineered to be spill and mess-free, the unit proves extremely forgiving to work with for most of the time. The dehumidifying gel is non-toxic so your pets would be able to hang around the dehumidifier without much difficulty.
As great as it is, Eva-dry E-333 Renewable Mini Dehumidifier also happens to have a major flaw: its coverage. The product could only tackle moisture in its immediate vicinity so you need to invest in several for your rig.
Effective and inexpensive dehumidifier
The EVAdry EEE-333 was called upon to remove the unbelievable amounts of moisture we were getting inside our RV, which now resides in Oregon where it is now the rainy season. We first tried one to make sure it worked, and when we were pleased with it, we bought additional ones for other closets and cabinets that were prone to collect moisture. We are quite pleased with the easy plug-in feature: When the display turns dark blue, time to plug it in, and when it is light orange, it is time to put it to work again. No having to dump water or listen to a noisy dehumidifier. We know it works, because we bought a hygrometer to measure our indoor humidity. Everyone is sleeping better now that we have minimized moisture and mold.Shared by Linda Synnott
- Renewable operation
- Limited coverage
- Slightly flimsy plug
Types of Dehumidifiers for RVs: Comparison
Most dehumidifiers can be separated into one of two groups: desiccant, sometimes referred to as rechargeable, or refrigerant. Without going into significant detail, refrigerant models rely on coil cool technique that funnels all the condensation in the air into a bucket or water reservoir.
Desiccant dehumidifiers instead rely on water-soaking material which rids the air of moisture without needing a power source or regular emptying. And as you might expect, each type has certain pros and cons that it would provide an RV owner.
Rechargeable or Desiccant dehumidifier
The rechargeable or desiccant model is best used in closed spaces, such as closets. If you have a mold problem in a specific space inside your RV, this is the most efficient dehumidifier to use. However, desiccant models will not be sufficient to tackle excess moisture for your entire vehicle.
- Lighter than compressors
- Can work at temperatures as low as 33 degree Fahrenheit
- Slightly warm air is blown out of the unit
- More expensive
- Higher power consumption: Desiccant models are slightly more expensive than compressors, but you should keep an eye on the power consumption.
Refrigerant models are a better bet if you need to keep your whole camper dry and mold-free. Any refrigerant unit will do the job, as long as it has sufficient capacity.
That means if you do not have to deal with very humid conditions often, and only need a unit to take care of excess moisture in certain areas of your rig, getting a refrigerant model might be an overkill.
- Slightly cheaper
- Lower power consumption
- Heavier than desiccant models
- More mechanical parts
- Do not work very well at temperatures lower than 40 degrees Fahrenheit
Which type is more ideal will depend on your camping needs and budget. For instance, if you’re specifically looking for the best RV dehumidifier that would cover an entire RV during a summer trip to Arizona, a refrigerant unit would be your best investment.
If you instead get a desiccant dehumidifier, it would be vastly under qualified to handle your rig’s dehumidifying needs, and you would surely suffer at the wrath of a hot Arizona summer.
How to Choose The Best Dehumidifier For Your RV
Measured in pint, the capacity of a dehumidifier shall tell you how much moisture it’s able to remove in the span of a day. Needless to say, to properly tackle the condensation in their vehicle, RVers must look around for dehumidifiers with suitable capacities. For most of the time, you should be able to determine the ideal capacity for your rig using interior space. Usually, you need between 30 and 50 pints for RVs but if you still feel damp, feel free to go to 70 pints.
A dehumidifier’s Extraction Rate, or Moisture Removal Efficiency, is the major measure for its effectiveness and efficiency. This is a feature that is usually quoted by manufacturers.
Extraction Rate is calculated as the water vapor removed from air at a defined inlet air temperature and humidity, divided by the total energy consumed by the dehumidification equipment during the same time period, including all fan and pump energy needed to move air and fluids through the system.
However, comparing the different extraction rates on different dehumidifiers is hard, as different manufactures use different rates depending on the temperature and relative humidity. Also,the two types of dehumidifiers operate best at different temperatures, which makes it hard to compare different brands.
Generally, compressor dehumidifiers have a higher extraction rate.
A frequently asked question from dehumidifier users is why their extraction rates are lower than the sales brochure stated when they bought the dehumidifier. An important point to make is that usually a dehumidifier will have its highest extraction rate in the first few weeks of being used.
This is because the area which has to be controlled is still very wet in the first few weeks therefore the dehumidifier works harder. Once the relative humidity level of the area has been brought down the dehumidifier will extract less moisture from the air in order to maintain the set humidity level.
How do you plan to use your dehumidifier, and how often? Will it have a permanent home, or do you intend to place it in the basement, and then move it to the RV and back?
As mentioned above, space is a luxury in recreational vehicles. You don’t want the dehumidifier to take up all the precious room in the interior and make it hard for you to move around. Aside from the size, the weight of the dehumidifier is also something that you have to consider before making purchases. Some units weigh as much as 26 lbs, so always keep weight in mind. Wheels and a carry handle will come in handy, if you plan to move the unit around.
Dehumidifiers specifically designed for RVs have a non-slip base, and are wider than they are high, so as to have a low center of gravity. Portable designs are less expensive.
Most people do not live in their RVs throughout the year, so you should take whatever precautions you can to ensure that rain doesn’t enter your vehicle, while still allowing for ventilation.
Park your RV within reach of a main line, if you have a refrigerant dehumidifier and need to use it while in storage, or you can also use strategically-placed desiccant models.
Desiccant models use more power than compressor units. The running costs of a compressor can be compared to that of a refrigerator, while a desiccant dehumidifier uses about the same energy as a washing machine.
Most dehumidifiers nowadays generate noise in operation but some sound much louder than the rest. Because of that, you must think about the noise level (dB) while shopping for dehumidifiers.
Of course, stay away from noisy models as they would disrupt your sleep at night. Without enough sleep, your body is unable to revitalize completely which leaves you in a drowsy state the following day. To be on the safe side, it’s widely advised that you read customer feedback to see if the rating on the label is correct.
After all, an RV is a confined space, and anything that’s described as “quite noisy” in such a small area could drive any sane person insane. An RV trip is supposed to be relaxing and stress-free, so don’t let an appliance ruin an otherwise enjoyable experience.
You manage to find several products with similar performance that fit the bill but could not make up your mind? If that is so, all you have to do is to carefully assess the additional features presented on such dehumidifiers.
Besides removing moisture in the atmosphere, a lot of dehumidifiers incorporate extra functions including thermostat, humidistat, laundry, timer and more.
- Humidistat: this constantly measures the humidity levels, and will automatically switch off when the levels are optimum.
- Laundry setting: a dehumidifier with a laundry setting helps to dry clothes faster, by operating the unit continuously.
- Timer: this is a great feature to have if you are away from the house for long periods of time. It enables you to set the unit to function for a predetermined number of hours a day.
- Adjustable louvers: This isn’t a main consideration, but a useful feature nonetheless. It allows you to redirect the airflow of the vents.
Other features you’ve already encountered in the product review section are things like automatic shut-off, anti-slip bottom, and transparent tanks. Now, these are only some of the features you might see, as manufacturers have continuously refined this essential RV accessory due to high demand.
Ease Of Use
Though various dehumidifiers nowadays feature straightforward controls, it’s strongly recommended that you go after models with user-friendly interfaces. Prioritize dehumidifiers that let you meticulously adjust the humidity level as you see fit, measured in percentages. Be aware that some of these units can offer just dry or very dry humidity levels.
Compare a range of examples with each other in order to identify the one that suits your current situation most. The best RV dehumidifier should be able to handle challenges from nature such as floods, storms and alike.
Best Dehumidifier Brands
Frigidaire is a very popular model in the US market. It is not particularly outstanding, but rather a good performer. Their product portfolio for camper dehumidifier consistently receives positive reviews from seasoned campers and works great to eliminate musty smells caused by dampness.
Frigidaire has a 70-pint, 50-pint and 30-pint models. All models are Energy Star® qualified.
Frigidaire was founded as the Guardian refrigerator company. The name was adopted in 1919, after General Motors acquired the company. General Motors owned it for the next 60 years, after which it was bought by Electrolux, its current owner.
If you are looking for an RV dehumidifier that is lightweight, small, and quiet, Delonghi will probably have the perfect one for you. Delonghi are specifically made for the European climate. Delonghi are more expensive than other brands, simply because it is manufactured in Italy, as opposed to China, where most other brands are made.
The standards and ratings system in Europe differs from that in the States, so whatever pints per day rating they have, should be halved. For example, a Delonghi 50-pint is a Danby 25-pint, if you want to make a comparison.
Delonghi dehumidifiers are well made by current standards, but have shorter working lives compared to some other models from other leading brands in the market.
GE, or The General Electric Company, was rated the world’s second largest company in 2010 by Forbes. It was formed in 1892 with Thomas Edison as one of the partners. Since then GE has grown to become a world leader in the field of electric brands. GE Appliances, a subsidiary of GE, is the leading supplier of refrigerators, washers, air conditioners and dehumidifiers.
If you are looking for a portable dehumidifier, GE is the brand for you. All units are reliable and effective. They are also very aesthetically pleasant, and priced reasonably, and are great for all areas including bathrooms, RVs, laundry areas, and basements.
LG dehumidifiers are increasingly popular, apart from a host of other household appliances that this renowned brand sells. LG’s dehumidifiers, as well as other products in its portfolio, have a reasonably high quality standard and are also pleasing to the eye, so you can generally expect what you will get for your money when it comes to LG.
The negative reviews are mostly on the life span of the units, as well as a high proportion of comments that relate to the humidistat and heating effect, on the air that has run through the unit.
Winix is much less known than other non-US-based brands like LG and Mitsubishi. Winix dehumidifiers are manufactured by Winix Inc. in the Republic of Korea. They also manufacture products for the Kenmore brand, among others.
Winix dehumidifiers are priced slightly higher than others, such as Haier and LG, but the reviews from consumers are much better than the lower-priced competitors. Winix has an overall better build-quality, and longer life span, as well as features that are not typical in most brands.
For example, the auto-restart function, while not rare, is not universal in all dehumidifiers, and neither is a condensate pump, as most models rely on gravity for drainage.
Another popular household name that everyone knows, Mitsubishi. Mitsubishi’s dehumidifiers are effective, quiet and reliable. Their dehumidifiers models are very popular in the UK, where rain and humidity is to be expected any time of the day and any day of the year.
Mitsubishi dehumidifiers have a “hot gas defrost” feature, which is their version of the auto-defrost feature on other brands. This feature allows the refrigerant units to work well in much lower temperatures. The brand costs a little more than others, but the quality is undeniable.
Comfort Aire Dehumidifier
This boutique brand Comfort Aire has only 3 models of RV dehumidifier, however all of them offer good value for money in general. Most reviews of this brand relate to the relatively short life span. On a positive note, they are quiet, and so for those who treasure this as a feature, this is the brand you should go for.
Danby is a solid all-round brand that performs well across the board and has consistently earned raving reviews from full-time RVers. Danby is a pretty safe bet if you need to pick the best dehumidifiers for RV urgently.
Its product range is vast and varied, so are the prices, allowing customers to choose a dehumidifier that is exactly right for them. Reviews are consistently favorable, so you cannot go wrong with a Danby.
In addition to these prestigious giants with long histories, more recent RV dehumidifier reviews also consistently include names like Pro Breeze, hOmeLabs, Eva-dry, KEDSUM, Hysure, Ivation and many more, each with its own advantages and highlights. You might come across a few more names in RV dehumidifier reviews; these are more contemporary brands with a more laser focus on RV dehumidifiers.
As you have seen, certain brands cater for a certain market and specific needs. This shows how vast and diversified the market for RV dehumidifiers is.
Therefore, to avoid getting yourself overwhelmed by the sea of good options out there, it is important to list what you need by order of priorities, go through the list below and make the final decision accordingly.
Ways to reduce humidity inside an RV
Even when you have got yourself the best dehumidifier for RV out there, running your dehumidifier all the time is not recommended. This will put an extra burden on its components, which will result in a shorter service life.
If you do find that the appliance is going into overtime often, it is highly recommended that you take care of the root cause of the excess humidity.
Try one or more of the following easy and cheap methods to reduce the overall humidity inside your motorhome and create less work for your dehumidifier.
Use the Public Bathhouse/ Install outdoor shower
The fact is hot showering is the number one cause of moisture buildup in the air within an enclosed motorhome or trailer. Therefore, whenever possible, you will definitely want to skip the shower in your rig and head to the campground bathhouse if one is available.
In good weather, a great option is to shower outside. Setting up an outdoor shower with a curtain is much simpler than many would expect, and there are many video tutorials to guide you through this process.
Avoid Hanging Things to Dry Indoors
It goes without saying that if you’re trying to remove moisture from the air, you won’t want to undo all of your work by adding to the humidity. Therefore, avoid hanging things to dry inside your RV: hang towels and laundry to dry outside if possible, or put the laundry room dryers to use during the cold months.
Change the Way You Cook
Pots and pans on the stove release steam into the air. Keeping your stovetop cooking covered is better, however the improvement is negligible. Instead, avoid using the stovetop and consider one of the following options:
- Outdoor cooking: Try cooking outside in good weather whenever possible. This will remove the issue of releasing steam into the air entirely, plus, outdoor cooking is one of the major perks of an RV life.
- Oven: In an enclosed space, the oven is a much better alternative to the stove. That said, even the propane oven can produce some moisture. Therefore, if you have a convection oven, go for it.
- Instant Pot: An Instant Pot is an essential electric appliance to have in an RV for a variety of reasons. You can use this versatile pot to reduce the amount of moisture in your RV by using it instead of a stovetop, and then releasing the pressure outdoors.
Use Your Vent Fans
You can help your dehumidifier out by putting your vent fans to use a few times a day when things start to feel humid. You should have a vent above your stove, as well as one or two on the ceiling of your RV.
Open The Windows
Alternatively, or in addition to opening the vents, you can open a window. This lets moisture escape and allows the dryer outdoor air in.
Even a small and affordable RV window fan helps to get the air moving. You’ll only need to run it for a few minutes two or three times a day.
Use Moisture Absorber Products
Moisture-absorbing products such as DampRid are the best solutions for keeping your rig dry while it’s in storage. These products absorb any moisture that does collect in your RV. They can also be used while the RV is in use in conjunction with other methods listed here.
Typically, if moisture collects while an RV is in storage, we will find it in the cabinets and closets. Therefore, it is recommended that you place the DampRid in the cabinets and other enclosed spaces, leaving the cabinet doors open.
Skip the Propane Furnace
Propane heaters emit lots of moisture. Meanwhile, electric heaters will keep things nice and dry. Another important tip for reducing humidity inside your rig is to skip the propane heater and use electric space heaters instead.
Important note: If you are relying on a heated underbelly to keep your water system from freezing, the propane furnace must be running for the underbelly to stay warm.
Open Cabinet Doors
Finally, because moisture typically builds up in small enclosed spaces, it’s a good idea to keep cabinet doors open when the weather is cold and dry. This will keep air circulating and help avoid mold growth caused by trapped condensation.
FAQs About Dehumidifiers For RV
1. How long does an RV dehumidifier last?
Full-time RVers report that their purchases can last anywhere from 3 years to 10 years, depending on the model and of course, proper maintenance and how hard they make the little machine work.
2. Should I run a dehumidifier in my RV?
Running a dehumidifier in your RV will greatly reduce excess moisture as well as preventing mold, fungus, bacteria buildup and damp smell, thus improving the indoor air quality, making it safer and more comfortable for you to breath.
Generally, you should run AC only when you need dehumidification and cooling, preferably during summer time in a hot, humid room. If you have a cold RV living space during winter, then running a dehumidifier only will be advisable since you need dehumidification and some heating.
3. Should a dehumidifier run all the time? How long should I run it?
You should run your dehumidifier only when humidity levels are higher than 50 percent. If you run your dehumidifier at any other time, your appliance will most likely run continuously and have very little impact on the overall air quality of your living space.
In addition, running your dehumidifier 24/7 when it is not required will put an extra burden on its components such as the compressor, which will result in a shorter service life. If you do find that the appliance is going into overtime often, it is highly recommended that you take care of the root cause of the excess humidity. Refer to useful tips on how to reduce humidity in your RV listed in the section above.
All in all, there are no ground rules on how long a dehumidifier should run. Depending on the weather conditions, according to full-time RVers, you can run the dehumidifier for anywhere between 3 hours to 12 hours per day. In general, once the dehumidifier has been established and has successfully removed most of the excess moisture, you can expect to let it work less to maintain a desirable level of humidity inside your RV.
4. What size dehumidifier do I need for my camper?
If you’re looking to find out how to choose the right dehumidifier, you should also figure out the right size. It is as important as figuring out the types to choose from. You should know that there are certain things to keep in mind when it comes to the right size.
For one, you have to check the size of your RV, when trying to figure out the correct dehumidifier size to buy. Usually the product description will specify that a certain dehumidifier is suitable for use in RVs of up to a certain size. If not, it’s best to check the customer reviews to determine if a model would work for your RV. So if you have a small RV, you should go for a small unit, which can work efficiently for it regarding moisture removal.
Secondly, you must also check the physical dimensions of the unit along with its tank size. As a tip, you might want to go for one with a 30-pint capacity if you’re planning to use one in your RV. It is already a good size that will not need constant refilling or emptying.
5. Do RV dehumidifiers use a lot of electricity?
First of all, the cost of electricity currently is roughly 15 pence per kWh. Then, once a dehumidifier has become established and there’s a steady level of humidity in your RV, you can expect it to switch itself on for two to four hours per day to maintain your desired level of humidity.
If the current power rate is 15 cents/kW, an electric dehumidifier uses 4.2 cents of power per hour. Therefore, for example, if you run it for 4 hours a day, the cost is 4 hours * 4.2 cents = 16.8 cents/day or about $61.32 per year.
Of course, the actual length of time it’s switched on for will depend on how you’ve set the humidity level on the machine, the ventilation, the size of your home and the humidity sources in your RV. The high level of humidity can be caused by poor ventilation.
6. Is there any brand that I should keep in mind?
Due to their ability to provide high-quality products and responsive services, a few manufacturers stand out from the rest on the markers of RV dehumidifiers these days. Since it’s always a good idea to buy from reputable names, keep these brands in mind while looking around for the best RV dehumidifier: Frigidaire, Powilling, Hysure, InvisiPure Hydrowave, Pro Breeze. Still, if you know for certain that a particular humidifier would suit your needs, feel free to disregard the brand.
7. How many types of dehumidifiers are available on the market?
Technically, you could split most dehumidifiers nowadays into two categories: refrigerant dehumidifiers and desiccant dehumidifiers.
Refrigerant Dehumidifiers: work like residential models: they tackle condensation across the interior. They are more energy efficient, but larger, noisier and more pricey.
Desiccant Dehumidifiers: are quiet and more affordable. The notable difference is they could only tackle humidity in a limited space, so they are only suitable if you want to clear out the damp in certain parts instead of the entire RV.
Keeping Dehumidifiers In Good Condition
Owning the best dehumidifier for RV is nice but it’s also essential that you take good care of it. Despite the fact that the majority of dehumidifiers require low amounts of maintenance, people still need to look after them. So follow the following tips and tricks to keep your RV dehumidifier at peak performance.
Always Set The Humidistat Appropriately
While feeling damp, people often want relief right away so they promptly set the humidistat at low/very low levels. Unfortunately, such a response unnecessarily increases energy consumption and creates a dry atmosphere which introduces additional issues to the scene. Hence, unless you have specific requirements, set the humidistat at 50%.
Don’t Turn The Dehumidifiers On/Off In Quick Succession
Like other electronics, it’s strongly recommended that you avoid turning your dehumidifier on/off many times in a row. Turning the dehumidifiers on and off too rapidly would place heavy strains on the compressor. So if you don’t want to short cycle the compressor by mistake, wait a bit between starting up your dehumidifier and shutting it down.
Wipe Clean The Intakes/Grilles
Beside moisture, dehumidifiers such in all sorts of materials that could interfere with the dehumidifying. That is why to preserve the effectiveness and the efficiency of your dehumidifier, wipe clean it every now and then. Of course, be careful while doing so as a second of carelessness could compromise the delicate integrity of the machines.
Need More Gear Advice?
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Last Updated on October 5, 2021