The humidity in an RV can often be much higher than the ideal level, which is between 30 and 50%. Dehumidifiers are perfect for removing this excess moisture, but emptying a dehumidifier’s water bucket in an RV is a hassle. However, dehumidifiers with a drain hose are easy to install and use, and provide a perfect solution for excess humidity in an RV.
This article explains the different sizes of dehumidifiers required for RVs, the factors that make a dehumidifier ideal for an RV, a list of the best dehumidifiers with drain hoses, and also answers a few FAQ.
What size dehumidifier do you need for an RV?
The size of a dehumidifier should be appropriate in dimensions of your RV.
Here’s a table that you can use to work out what size dehumidifier you need for your RV:
| RV Area (Sq. Ft) | Dehumidifier’s Size |
| 100 | 10 pints |
| 144 | 10 pints |
| 192 | 15 pints |
| 169 | 15 pints |
| 225 | 20 pints |
| 375 | 25 pints |
| 400 | 25 pints |
| 576 | 35 pints |
More information on what makes a particular dehumidifier ideal for an RV, such as ease of installation and energy consumption can be found here.
Top 10 RV dehumidifiers with a Drain Hose
Here are the best dehumidifiers for RVs that come with a drain hose. You can click on each to check the latest prices on Amazon, Homelabs.com, and Vremi.com.
1. hOmeLabs Dehumidifier
The hOmelabs HME020030N Energy Star certified dehumidifier is one of the high-capacity dehumidifying devices for RVs and comes with a drain hose outlet for worry-free auto drainage. These devices can remove 22 pints of water per day from areas of up to 1500 sq. ft.
This model also has a Turbo mode that boosts the dehumidification operation by increasing the fan speed from normal to high.
With a sleek and clean appearance, 0.8-gallon water tank, a weight of 30.5 pounds, and dimensions of 15.2 x 10 x 19.7 inches, it will fit nicely into your RV.
Built-in wheels and handles make it easily mobile.
Pros
- Low noise (50dB)
- Easy to clean filter
- Auto defrost
- 2-years warranty
Cons
- The unit requires a 5/8″ diameter hose, which is not included.
- The auto defrost function was deemed defective by some users.
- If you don’t use the continuous drain mode, some of the water gets collected in the closed-off drain hose inlet, which gets moldy due to stagnant water (unless you take out the stopper often and pour out the collected water regularly).
2. Vremi Dehumidifier
The Vremi dehumidifier comes with a drain hose outlet to continuously remove water from the unit into an RVs sink. This Energy Star-rated dehumidifier has a massive potential of removing 22 pints of water from RV, providing a comfortable environment covering areas of up to 1500 sq. ft.
The memory feature of this model allows it to run where it left off, as you lose the power. It also features a 0.7-gallon water tank.
The built-in wheels handle, and 33 pounds of weight make this device portable. With an elegant look and 16.1 x 10.4 x 19.9 inches dimensions, this model can perfectly complement your RV.
Pros
- Portable
- Auto defrost
- Quiet and efficient
- Adjustable humidity settings
- Easy to clean filter
Cons
- The drain hose is not included and needs to be purchased separately
- 1-year warranty
3. BLACK+DECKER Dehumidifier
The BLACK+DECKER BD22MWSA dehumidifiers feature a 1.64 ft drain hose for continuous drainage of the water extracted from the air. These dehumidifiers can remove 22 pints of water per day, working perfectly over areas of up to 1500 sq.
With a 10.24 x 15.2 x 19.69 inch body, this dehumidifier will only take up a small amount of space, making it a good choice for RVs.
Another important feature is a large capacity water tank (0.79 gallon), which can be used for storing water before moving towards continuous drainage. Other prominent features include an audible water level alert system, auto defrost, and adjustable humidistat with an LED digital display.
This unit weighs 33.1 pounds.
Pros
- Sleek and compact
- Climate pledge friendly
- Energy Star certified
- High moisture reduction capacity
Cons
- A bit Noisy (52 dB)
- Difficult to carry (no wheels or handle)
4. Honeywell Dehumidifier
The Honeywell TP50WKN Energy Star dehumidifier comes with a drain hose for removing 50 pints of water from the air per day, over spaces of up to 3000 sq. ft.
This dehumidifier is nicely portable, with a handle at the top of the dehumidifier that allows it to be carried around easily from one place to another (or stored away easily).
With dimensions of 13.2 x 10.5 x 20.1 inches, this device can easily fit anywhere.
Pros
- Portable
- Saves energy
- WIFI enabled and controllable via Alexa
- Smart control (via Amazon Alexa)
- 5-year warranty
Cons
- A little Heavy compared to other products in the list (36 pounds)
- Some users complained that this unit was noisy.
5. Midea Cube Dehumidifier
The Midea Cube MAD20S1QWT Energy Star certified dehumidifier is one of the best dehumidifiers for RVs that comes with a drain hose for continuous water drainage operation. This little beast can efficiently remove 20 pints of moisture from areas of around 1500 sq. ft.
You can use this dehumidifier in your RV because of its smart working mode. This product comes with an android app that allows you to adjust humidity settings, check the water level and drain the water.
It can fit well in any space with 13.5 x 13.5 x 12.39 inches dimensions and weighs 33.3 pounds.
Pros
- Smart and innovative
- Reduces moisture quickly
- A versatile solution for all spaces
- Energy efficient
Cons
- Doesn’t work smoothly in intense weather conditions
- A bit noisy (54dB) compared to other products in the list
- Only a 1-year warranty
6. Gocheer Upgraded Dehumidifier
The Gocheer Upgraded Dehumidifier offers convenient continuous drainage via a 4.9ft drain hose. With its 24-hours continuous dehumidification and drainage feature, it will not create a mess in your RV.
Another essential feature that makes this dehumidifier a perfect pick for an RV is its high efficiency, which make it 20% more effective than the previously listed units. It can adjust the moisture, as per your requirements, covering areas of around 480 sq. ft.
You will not find it hard to carry this dehumidifier because its dimensions are 7.8 x 5.3 x 13.9 inches, 5.7 pounds weight, and a carrying handle.
Pros
- Environment-friendly product
- Stores Large Water in its water tank (0.5 gallons)
- Portable and long-lasting
- Low noise (Less than 50 dB)
Cons
- 1-year warranty
- A few users complained that the device stopped working after a few months of use.
7. Honeywell TP70AWKN Dehumidifier
The Honeywell TP70AWKN Smart Energy Star dehumidifier comes with a 3ft long drain hose that allows you to drain water continuously whether you’re using it in RV, garage, or home. This Energy star has a powerful dehumidification capacity of up to 30 pints of moisture per day, covering around 1000 sq. ft.
Innovative design has made this product intelligent, versatile, and easy to operate. Its voice command working interface will enable you to control the operations seamlessly. This model measures 13.2 x 10.5 x 20.1 inches and weighs 29.92 Pounds.
Pros
- Easy to use and maintain
- Reduce moisture instantly
- Long-lasting product
- Saves energy
- 5-years warranty
Cons
- Noisy (69 dB as reported by customers)
8. Infoia Dehumidifier
The Infoia PD161C dehumidifier comes with a 6.56 ft drain hose that can self-drain the water collected in the water tank via gravity. With 30 pints of dehumidification capacity per day, this powerful dehumidifier can cover areas of up to 1500 sq. ft.
The 0.4-gallon water tank can store water collected from the air. The recessed handles and lightweight(23.8 pounds) make movement easy.
The adjustable timer saves energy costs by running the dehumidifier only when required. This unit measures 8.3 x 12.2 x 17.3 inches, making it easily fit into any sized RV.
Pros
- Adjustable fan speed
- Washable filter
- Energy efficient
- Low noise(42dB)
Cons
- The unit gets noisy at the high fan speed.
- 1-year warranty
9. Ivation Dehumidifier
The Ivation IVADM55 dehumidifier comes with a 4 ft long drain hose that allows it to empty itself automatically. This small dehumidifier can remove 2 liters of moisture per day from the air.
Intelligent memory, adjustable fan speed, and humidity are some other important features of this dehumidifying unit.
The compact 9.4 x 7.5 x 17 inches dimensions and 10.6 pounds weight make it ideal for RVs.
Pros
- Sleek and lightweight
- Whisper quiet
- Easy to clean
- Energy efficient
Cons
- 1-year warranty
- Some users complained that this unit didn’t last longer than expected.
10. TBI Pro Dehumidifier
The TBI Pro dehumidifiers feature a 6.5 ft drain hose that allows continuous drainage operation with no need to empty the water bucket (0.5 gallons) repetitively. This high-efficiency product can remove 35 pints of water per day from spaces of up to 1000 sq. ft and can be a perfect choice for maintaining healthy humidity levels in RVs.
This model boasts an innovative but simple design with recessed handles for easy portability. The 12.68 x 6.02 x 5.94 inches dimensions and 2.94 pounds of weight make it a good choice for RVs and campers.
The additional features that outweigh this product compared to others are adjustable fan speed, sleep mode, 24 hour programmable timer, auto shut-off, and auto-restart function.
Pros
- Energy efficient
- Perfect solution for small to large spaces
- Quick humidity maintenance
- Adjustable fan speed
- Low noise (36dB)
Cons
- The wheels do not lock well
What makes a particular dehumidifier ideal for an RV?
When choosing the best dehumidifier for an RV, there are various factors to consider, including energy consumption, ease of installation, size, and drain hose capacity.
Ease of Installation
The first thing you need to consider while selecting a dehumidifier for an RV is the installation process. The top brands have now launched “Plug & Play” devices. It means that you simply plug the device into a compatible power outlet, and it starts dehumidifying the air around you.
Energy Consumption
Regardless of the number of appliances you have already connected to your RV’s battery, ensure that adding the dehumidifier unit doesn’t consume too much energy. Otherwise, your RV batteries can be overloaded, which is clearly not good in the long run for the life of the dehumidifier or your battery.
Dehumidifiers with an Energy Star rating utilize 0.23kWh to 0.548kWh of energy per hour. The Energy Star suggests calculating a dehumidifier’s energy factor to determine its energy efficiency.
Simply divide the liters of water extracted from the air by the power consumed in kilowatt-hours (kWh). A dehumidifier with a high energy factor is more efficient.
Dehumidification Capacity
The dehumidification capacity is an essential factor that needs to be considered while buying a dehumidifier for an RV. This will enable you to get an idea of whether you can achieve your desired moisture level or not.
Noise Level
An RV is one of those places where you don’t want extra noise because it’s ideally a calm place, perfect for relaxation. What if the dehumidifier is loud? You will get rid of the moisture or humidity but face the constant irritation of noise.
The ideal dehumidifier for an RV is the one that is whisper-quiet. According to CDC, the noise level of whisper is 30dB, a normal conversation is 60dB, and a bike’s engine is 70dB, whose long term exposure can cause hearing loss.
Therefore, a dehumidifier with 30-50dB of noise level is considered super quiet, 50-57dB are relatively quiet to somewhat noisy, and the one’s above this noise level (>60dB) are loud and annoying.
What Should the Humidity be in an RV?
The humidity level inside your RV should be kept below 60%, ideally between 30 to 50% percent. This will enable you to experience air that is easy to breathe in and feel healthy.
Why is it Important to have a Drain Hose in an RV?
A dehumidifier with a drain hose plays a crucial role in avoiding spills and water leakage. The drain hose can continuously discard the water from the water tank either via gravity or through a pump. This allows you to leave the dehumidifier on without worrying about emptying the water bucket and keeping your RV clean.
