A dehumidifier for camper use has two very different jobs. When you are camping on shore power, it fights the moisture people make: a shower, a pot of pasta and two people breathing overnight add a lot of water to a 200 sq ft space. In storage, it keeps a closed-up rig from turning musty over the winter. The first job needs an electric unit. The second can often be done with absorbers that need no power at all.
Propane heat makes condensation worse. Burning propane produces water vapor along with heat, so an RV running its furnace or a catalytic heater in cold weather often has wet windows by morning.
| 120V compact compressor | Small desiccant (120V) | 12V thermoelectric mini | No-power absorber | |
|---|---|---|---|---|
| Water removed | About 20 to 25 pints/day (DOE) | About 13 pints/day (listing) | Ounces per day | Ounces over weeks |
| Power | Shore power or a large inverter | Shore power or a large inverter | 12V outlet or adapter | None |
| Works in cold | Poorly below about 40F | Yes, to about 33F | Poorly | Yes, slowly |
| Best use | Camping on hookups | Cold-weather camping, boats | Small closets in the rig | Winter storage |
Sources: ENERGY STAR records and Amazon listings for the picks below.
Best RV dehumidifiers compared
| Pick | Capacity | Coverage | Pump | Noise | ENERGY STAR | Price tier | |
|---|---|---|---|---|---|---|---|
| Best dehumidifier for RV Levoit 25 (smart) | 25 pints/day (DOE) | Up to 4,500 sq ft (Amazon listing) | Yes | HouseFresh measured 50.2 dBA on Turbo (Levoit Smart Dehumidifier) | Yes | $$$ | Check price |
| Best compact compressor Midea Cube 20 | 20 pints/day (DOE) | Up to 1,500 sq ft (maker claim); Sylvane suggests about 300 sq ft | No | Not published by Midea for this SKU | Yes | $$$ | Check price |
| Best small and light hOmeLabs 8 pint | 8 pints/day (AHAM 80F) | Up to 1,800 sq ft (Amazon listing) | No | 38 dB (maker claim on listing) | Not stated | $$ | Check price |
| Best for cold weather and boats Ivation 13 desiccant | See notes | Up to 270 sq ft (Amazon listing) | No | Not published | Not stated | $$ | Check price |
| Best cordless for storage Eva-Dry E-500 | See notes | Spaces up to 500 cubic feet | No | Silent (no fan or compressor) | No | $ | Check price |
| Best moisture absorber for RV DampRid hanging bags | See notes | Not stated | No | Silent | No | $ | Check price |
Best dehumidifier for RV
Levoit 25 Pint Smart Dehumidifier with Removable Pump
Best for: motorhomes and trailers on hookups.
The Levoit 25 pint smart dehumidifier is our pick for a motorhome or fifth wheel on shore power. ENERGY STAR certified it at 24.54 pints a day and 1.88 L/kWh, and it meets the Most Efficient criteria, so it is easy on a 30 amp pedestal. It offers four ways to drain, including a removable pump that lifts water up to 9.8 ft, which lets you run a hose into the shower drain. HouseFresh measured it at 50.2 dBA on Turbo.
| Model number | LDH-H251S-WUS |
|---|---|
| Type | Compressor (portable) |
| Capacity (current DOE test, 65F) | 25 pints/day |
| Coverage | Up to 4,500 sq ft (Amazon listing) |
| Built-in pump | Yes |
| Wi-Fi / app | Yes |
| ENERGY STAR | Yes |
| Noise | HouseFresh measured 50.2 dBA on Turbo (Levoit Smart Dehumidifier) |
| Bucket / capacity | 4 L |
| Capacity, as listed | 25 pints/day at 65F, 60% RH; up to 84 pints at 104F, 95% RH |
| Pump | Removable, washable pump lifts up to 9.8 ft (3 m) |
| Drain options | Gravity drain, garden hose, pump or tank |
| Filter | MERV 11 |
| App | VeSync app and voice control |
| ENERGY STAR test data | 24.54 pints/day, IEF 1.88 L/kWh, about 281 kWh/yr; meets ENERGY STAR Most Efficient (record for LDH-H251S-WUS) |
| Price tier | Mid (about $200 to $400) |
Pros
- Efficient
- Pump or gravity drain
- App control
Cons
- Heavy for a van (15 kg listed)
- Needs shore power
Spec sources (checked 2026-11-12): Amazon listing B0H41K4PQN (Model Number LDH-H251S-WUS); RTINGS review: Levoit Smart Dehumidifier; HouseFresh: best dehumidifiers we tested (50.2 dBA); ENERGY STAR certified product record (LDH-H251S-WUS).
Best compact compressor
Midea Cube 20 Pint Smart Dehumidifier
The Midea Cube 20 is ENERGY STAR certified at 20.16 pints a day, and its expanding bucket packs down for travel and opens to 3.2 gallons when parked. It has Wi-Fi, which is handy if your rig has a hotspot.
| Model number | MAD20S1QWT |
|---|---|
| Type | Compressor (portable) |
| Capacity (current DOE test, 65F) | 20 pints/day |
| Coverage | Up to 1,500 sq ft (maker claim); Sylvane suggests about 300 sq ft |
| Built-in pump | No |
| Wi-Fi / app | Yes |
| ENERGY STAR | Yes |
| Noise | Not published by Midea for this SKU |
| Bucket / capacity | 3.2 gal (12 L) expandable bucket, per the user manual |
| Warranty | 1-year limited (Sylvane listing) |
| ENERGY STAR test data | 20.16 pints/day, IEF 1.70 L/kWh, about 249 kWh/yr (record for MAD20S1QWT) |
| Price tier | Mid (about $200 to $400) |
Pros
- Packs small
- Big bucket when expanded
- Wi-Fi
Cons
- Needs shore power
- Not silent
Spec sources (checked 2026-11-11): Midea US product page MAD20S1QWT; Sylvane listing (suggested room size, warranty); User manual (capacity, tank); ENERGY STAR certified product record (MAD20S1QWT).
Best small and light dehumidifier for campers
hOmeLabs 8 Pint Compact Smart Dehumidifier
For a campervan or small trailer, the hOmeLabs HME0091 is 16 inches tall and 22.3 lb. Note the rating: 8 pints a day at 80F and 60% RH, the older test condition, with a 0.4 gallon tank and a drain hose included. hOmeLabs claims 38 dB.
| Model number | HME0091 |
|---|---|
| Type | Compressor (portable) |
| Capacity (AHAM test, 80F, 60% RH) | 8 pints/day |
| Coverage | Up to 1,800 sq ft (Amazon listing) |
| Built-in pump | No |
| Wi-Fi / app | Yes |
| ENERGY STAR | Not stated |
| Noise | 38 dB (maker claim on listing) |
| Bucket / capacity | 0.4 gal |
| Capacity, as rated | 8 pints/day at 80F, 60% RH; up to 24 pints at 95F, 90% RH |
| Drain | Tank or 3.3 ft drain hose (included) |
| Size / weight | 7.5 x 11 x 16.1 in, 22.3 lb |
| Price tier | Value (about $100 to $200) |
Pros
- Small footprint
- Drain hose included
- Wi-Fi
Cons
- Low capacity
- Small tank
Spec sources (checked 2026-11-12): Amazon listing B0D1H9DXJZ (Model Number HME0091).
Best for cold weather camping and boats
Ivation 13 Pint Small-Area Desiccant Dehumidifier
Compressor units struggle in a cold rig. The Ivation 13 pint desiccant dehumidifier works from 33F to 104F and weighs 14 lb. The trade-off is power: its listing gives 470 W on high and 280 W on low, too much for most battery banks.
| Model number | IVADDH06 |
|---|---|
| Type | Desiccant (electric, heated wheel or element) |
| Coverage | Up to 270 sq ft (Amazon listing) |
| Built-in pump | No |
| Wi-Fi / app | No |
| ENERGY STAR | Not stated |
| Noise | Not published |
| Low-temperature operation | Works from 33F to 104F (Amazon listing) |
| Bucket / capacity | 3.8 pint reservoir |
| Water removal | Up to 13 pints/day at 68F and 60% RH (Amazon listing) |
| Power | 470 W on high, 280 W on low |
| Drain | Reservoir or continuous drain hose |
| Timer | 1 to 12 hours |
| Weight | 14 lb |
| Price tier | Value (about $100 to $200) |
Pros
- Works to 33F
- Light
Cons
- High power draw
- Small capacity
Spec sources (checked 2026-11-12): Amazon listing B07B8SCPZ4 (Model Number IVADDH06).
Best cordless for winter storage
Eva-Dry E-500 High Capacity Renewable Dehumidifier
For an RV or boat in storage with no power, a few Eva-Dry E-500 units spread through the cabin, closets and bathroom keep things from going musty. Each is rated for 500 cubic feet and lasts about 30 to 60 days between recharges according to listings.
| Model number | E-500 |
|---|---|
| Type | Renewable desiccant (cordless) |
| Coverage | Spaces up to 500 cubic feet |
| Built-in pump | No |
| Wi-Fi / app | No |
| ENERGY STAR | No |
| Noise | Silent (no fan or compressor) |
| Bucket / capacity | Absorbs about 6 to 8 oz before renewing (retailer listing) |
| Time between renewals | About 30 to 60 days, depending on humidity (retailer listing) |
| Size | About 8 x 2.25 x 5.25 in |
| Price tier | Budget (under about $100) |
Pros
- No power in use
- Reusable
Cons
- Must be recharged at an outlet
- Small capacity
Spec sources (checked 2026-11-11): Zoro listing E-500 (500 cu ft); SupplyHog listing (30 to 60 days); BuyDig listing (6 to 8 oz).
Best moisture absorber for RV
DampRid Hanging Moisture Absorber Bags
DampRid hanging bags are the simplest storage option: hang one in each closet and the bathroom, and swap them when the liquid reaches the line. Listed to last up to 60 days.
| Model number | Hanging bag (14 to 16 oz) |
|---|---|
| Type | Disposable / refillable moisture absorber (no power) |
| Coverage | Not stated by maker |
| Built-in pump | No |
| Wi-Fi / app | No |
| ENERGY STAR | No |
| Noise | Silent |
| Bucket / capacity | Bags listed at 14 oz or 16 oz depending on pack |
| How long it lasts | Up to 60 days, depending on conditions (retailer listing) |
| Price tier | Budget (under about $100) |
Pros
- Cheap and simple
- No power
Cons
- Brine can leak if a bag tears while driving: remove before travel
Spec sources (checked 2026-11-12): Home Depot listing (up to 60 days); DampRid 14 oz hanging bag listing; Amazon listing B09QXT95G6 (DampRid 16 oz hanging, 3 pack, FG86FFESBAM).
Best 12V dehumidifier
A true 12V dehumidifier for RV use that removes pints of water a day is hard to find. Most units sold as a 12V dehumidifier are small thermoelectric (Peltier) units that run from a 12V adapter and remove ounces, not pints. They can help in a closet or a small boat cabin, but they will not keep up with cooking and showers.
If you want to run a compressor unit off-grid, check its power draw against your inverter and battery bank. A 12V dehumidifier for boats or RVs is only as useful as the battery that feeds it, and a compressor running for hours will drain a typical house battery quickly. In practice, most RVers run a dehumidifier on shore power or a generator and rely on ventilation off-grid.
Dehumidifier for camper winter storage
For winter storage, combine absorbers with ventilation:
- Clean and dry the interior, empty the fridge and prop its door open.
- Place absorbers in the bathroom, closets and under the bed. Use trays under refillable tubs in case they tip.
- Open cabinet doors so air can circulate.
- If you have shore power in storage, a small compressor or desiccant unit draining to the shower beats absorbers by a wide margin. Use a desiccant unit if the rig will sit below about 40F.
- Check monthly and replace full bags.
Boat dehumidifier
A boat dehumidifier works the same way. On a dock with shore power, a small desiccant unit is often the better choice because cabins get cold and damp in the off-season, and desiccant units keep working near freezing. On a mooring with no power, cordless silica gel units and absorbers are the only options. Keep calcium chloride absorbers secured: the brine is salty and you do not want it spilling into the bilge or onto wood.
Frequently asked questions
Do I need a dehumidifier in my RV?
Can I run a dehumidifier off RV batteries?
How do I stop condensation in my camper?
Sources
- ENERGY STAR Certified Dehumidifiers dataset (data.energystar.gov)
- ENERGY STAR: Dehumidifier testing and capacity