Questioning if it’s okay to make use of a dehumidifier in your motorhome, caravan or campervan? Frightened about damp, mould, hearth, price or practicalities? After years of expertise, right here’s every little thing it’s good to learn about utilizing a dehumidifier if you’re not utilizing the van.
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Utilizing a dehumidifier in a motorhome or camper
Look on any discussion board or group, and also you’ll see a dialogue in regards to the practicalities of utilizing a dehumidifier in a camper, motorhome, RV or boat to take away moisture from the air.
Some individuals swear by them, others say they’re a waste of cash. So which is it? For those who’re going to go away your motorhome unused for a time frame (often over winter), must you be utilizing a dehumidifier?
Why Moisture is a Drawback in Motorhomes
Motorhomes are AWFUL for moisture construct up. The confined area and vary of makes use of (kitchens, loos, dwelling areas, and sleeping) create the proper setting for moisture to build up.
Simply being in a single for a day causes one thing like a litre of moisture to enter the air. Add to that moist coats, pets, restricted air flow and plenty of scorching drinks, and you may see the way it rapidly builds up- particularly in Autumn and Winter.
Left unchecked, all this moisture can result in a number of points that have an effect on each your consolation and the longevity of your motorhome, together with:
- Condensation Buildup: Persistent condensation can result in water pooling on surfaces like window ledges, which can seep into the construction of the motorhome (particularly dangerous you probably have any wooden within the base construction.)
- Mould and Mildew: Excessive humidity ranges create a perfect breeding floor for mould and mildew, which can’t solely harm your motorhome’s inside but in addition pose well being dangers, significantly for these with allergic reactions or respiratory situations.
- Damp Smells: A musty odour is commonly one of many first indicators of moisture issues, attributable to damp materials, carpets, or hidden mould progress.
- Harm to Fixtures and Fittings: Over time, moisture can warp wood fittings, corrode metallic fixtures, and harm upholstery or insulation.
- Everlasting Harm: Extra moisture can considerably cut back the lifespan of your van’s inside and result in expensive repairs. For full-time vanlifers or these touring in cooler seasons, addressing moisture is essential to make sure a dry, wholesome dwelling setting.
How you can monitor the humidity ranges in your camper
In case you are uncertain of the humidity degree in your van and don’t have an inbuilt monitoring system, you possibly can add certainly one of these humidity displays to your motorhome or campervan:
For those who’re leaving the van in storage for winter and aren’t there on a regular basis, you’ll in all probability choose one thing just like the final one, which has an app and alerts for monitoring the automobile if you’re not there.
The Issues with Dehumidifiers
So, we all know we don’t need quite a lot of moisture within the automobile. Absolutely a dehumidifier is the proper solution- sure?
Effectively… possibly. However it’s not that straight ahead.
Dehumidifiers work by eradicating moisture (humidity) from the air, stopping that moist air resulting in issues like mould and condensation in your motorhome.
They work to take away any extra moisture till it’s in an optimum vary (often 40-60% humidity).
The difficulty is, most motorhomes and campers aren’t absolutely sealed. They’ve (intentionally) air holes to permit gasoline to flee. There are additionally usually tiny gaps round door frames and window frames (intentionally or attributable to many miles of driving over bumpy roads!)
All of which means- the dehumidifier is never glad. As extra (damp) air enters the van, it retains working and dealing… and dealing.
This may result in issues akin to massive electrical drain, burnout and, in probably the most excessive instances, hearth.
However that doesn’t imply they’re not worthwhile. Actually, there are some I extremely suggest. Learn on…
Fulltime Vanlife vs Storage
Many individuals who stay full-time of their motorhome or camper don’t have any want of a powered dehumidifer, as they’re continuously within the automobile to provide air flow and heating. For that motive, in the event you’re in your van quite a bit all year long, I like to recommend one thing like these Moisture Absorbers – a pal of mine who lives full-time in her van swears by these.
HOWEVER… in the event you’re winterising your motorhome (placing it away for the winter), it’s good to do certainly one of these three issues:

Dehumidifiers Vs Heaters Vs Air flow
As talked about above, there are a few different methods to cope with the winter damp and chilly. Heating and Air flow.
A dehumidifier actively removes moisture from the air, tackling condensation and lowering the chance of dampness and mold. Nevertheless, it doesn’t tackle the foundation explanation for moisture. It would heat the air barely, however not sufficient for chilly air to turn into heat.
Heating raises the temperature contained in the motorhome, which may help cut back condensation by warming chilly surfaces, however by itself, it doesn’t take away humidity from the air.
Air flow permits moist air to flee and contemporary air to flow into, stopping humidity from build up within the first place. Whereas air flow is important for lowering total moisture ranges, it may be much less efficient in chilly or wet climate when maintaining home windows or vents open isn’t sensible.
The best choice is to mix these strategies. which is simply one of many causes you must test in your automobile recurrently and keep it if you’re not utilizing it.
How Do Motorhome Dehumidifiers Work?
For the aim of motorhome, caravans and campers – there are two sorts of dehumidifiers that we’ll take a look at:
- Compressor Dehumidifiers
- Desiccant Dehumidifiers (I’ve additionally added in transportable dehumidifiers, as they work the identical method for our functions)
Compressor Dehumidifiers
Compressor or Refrigerant dehumidifiers work by drawing in moist air utilizing a fan. This air then comes into contact with cooled coils, the water within the air condenses and drops down right into a water reservoir, whereas the (now dry) air passes by means of the nice and cozy coils and heats again up, earlier than being launched again into the encompassing setting.
As a result of these use cooling and heating strategies, these dehumidifiers often require mains energy to work. Additionally they require you to empty the water tank recurrently or they cease working.
I’ve used a compressor dehumidifer for years in my rest room and it’s good (particularly for loos with out home windows). It’s additionally nice for motorhomes that are saved someplace with a mains energy supply and may be monitored (like on a driveway)
- How They Work: These use a compressor and refrigerant to chill a coil, inflicting moisture within the air to condense.
- Finest For: Heat or reasonably cool environments.
- Benefits: Vitality-efficient and highly effective in greater temperatures.
- Drawbacks: Much less efficient in colder situations, as they depend on heat air to operate effectively. Want mains energy. Have to be emptied recurrently. Shouldn’t be left on for hours unattended.
Desiccant Dehumidifiers & Moveable Dehumidifiers
Desiccant fashions work utilizing water-absorbing materials to gather moisture. They often include absorbent supplies like gels, silica beads, or salts. Humid air is drawn over the fabric and because the air cools moisture is collected.
As soon as the absorbent materials is full you will want to both substitute or recharge the pouches or substitute your entire dehumidifier system.
As a result of these dehumidifiers use a cloth already in place, they usually don’t want any energy supply in any respect. These are good for motorhomes or caravans that are in storage over winter. The powered variations are higher in bigger areas, however are sometimes noisy.
- How They Work: These use a chemical desiccant to soak up moisture from the air.
- Finest For: Chilly climates, off-grid or winter motorhoming, small areas like wardrobes
- Benefits: Operates effectively in low temperatures, quieter than compressors. Most don’t require energy
- Drawbacks: Powered variations use extra vitality in comparison with compressor fashions. Want altering recurrently to be efficient. Not good for giant areas.
Which Dehumidifier to decide on?
So, which kind is greatest in the event you’re not utilizing your automobile all through winter? Listed here are some questions that will help you select:
- Do you retailer your automobile at residence or very close to by so you possibly can test it each day/ recurrently?
- Do you’ve 230v energy whereas your van is in storage or on the driveway?
- Will you be capable of get to the van to empty a full container?
If the solutions to those are all sure, then I like to recommend a compressor dehumidifier alternated with a heater like an oil-filled radiator. Depart the heater on, and a couple of times every week, run the dehumidifier.
If the solutions to 1 or all are not any, go for a number of non-powered dessicant dehumidifiers. Ideally, go to the automobile at the least as soon as every week to place the heating on, air it out and stop massive ranges of moisture build up. (The humidity monitor can actually assist along with your peace of thoughts.)
Ultimate Ideas
A dehumidifier generally is a beneficial device in managing moisture in your camper. Nevertheless, it’s not a standalone answer. Combining a dehumidifier with correct air flow and heating ensures the very best outcomes for maintaining moisture underneath management.
For those who’re nonetheless uncertain, begin by monitoring your motorhome’s humidity ranges with a hygrometer and assessing the moisture points you face. With a bit of trial and error, you’ll discover the proper stability to maintain your motorhome dry and cosy on each journey. Tell us within the feedback the way you handle moisture in your motorhome—your suggestions might assist others!
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