10 tips to reduce condensation in your motorhome

10 Tips To Reduce Condensation in your Motorhome

With the arrival of Autumn, one of the first things to think about as the weather starts to get colder, is what steps you can take to manage condensation in your motorhome. In this article we share our Top 10 Tips to Reduce Condensation in your motorhome, campervan, caravan or RV


So what is condensation?

In terms of our Motorhomes, condensation is caused by the difference in temperature inside and outside of the van. When humid air inside our van touches a cold surface, such as the cab front window, it causes water droplets (condensation) to form.

Why do you need to reduce condensation?

Condensation can cause a build up of mildew and damp, which is bad news for :

  • our personal health, and
  • the health of our Motorhome, campervan, RV or caravan

Damp in a van can cause alot of damage and result in costly repair bills. It could also impact the value of your van when trying to sell or part-exchange it if damp is detected by a professional habitation check.

Where do you typically find condensation?

The most obvious signs of condensation are on windows. When we collected our first motorhome, we noticed alot of condensation on the cab windscreen, skylight and overhead shelf each morning. Now we use external screen covers and there’s rarely any condensation in the front cab area.

Basically condensation can form anywhere warm moist air touches a cooler surface. So external walls that touch an area with no air flow such as a bed against the roof, or bench seats/sofa could all collect condensation and become damp. So what can you do about it?

Here are our 10 tips to reduce condensation in your motorhome, campervan, caravan or RV.


Step 1: Invest in External Screen Covers.

We were amazed at the difference our screen covers made during our first winter. They keep our motorhome warmer during the evening and in the morning there’s no condensation on our front windows.

External covers work much better than internal covers as the external covers keep your windscreen relatively warm. Internal screens keep the van warm however, the window will get very cold and therefore attracting lots of condensation by the morning.

We use Taylor Made External Screen Covers. We managed to buy ours 2nd hand on eBay. It’s well worth keeping an eye on eBay as people often sell them when they trade-in or change Motorhome models.

Step 2. Open windows, doors and skylights.

Sounds obvious but it’s the quickest and easiest way to remove built up moisture. We keep our skylights open as much as possible and weather permitting. We always leave them open when we are cooking and having a shower as so that we remove the steam as quickly as possible.

Step 3. Use an extractor fan

If you have one installed in your van then use it to reduce moisture build up. These are great to switch on when cooking or having a shower to quickly suck the steam out before it can build up inside your van.

Step 4. Invest in a handheld window vac.

These are just brilliant at removing condensation. If you do wake up in the morning to find condensation on your windows then this is the best way to extract the moisture from your van.

We use a rechargeable Karcher handheld vac, which lasts for several days before needing a quick top-up charge when next on a hook-up.

A handheld window vac is also great to use after a shower. Whizz over the shower cubicle doors, walls and shower tray to dry it out quickly. This also helps keep your shower smear free and reduce limescale build up.

Step 5. Use campsite facilities such as showers & tumble dryers

If it’s too cold or wet outside to leave a skylights / window open then moisture will soon build up inside your van. Limit the amount of steam you’re generating inside your van wherever possible. For example:

  • make use the campsite showers
  • If the campsite has a tumble dryer then use it to dry out wet towels
  • Think about what you cook, having pans boiling on a hob will generate lots of steam. Get creative with dinners with ‘low steam’ dinners

Step 6. Allow airflow around your van.

Whenever possible we open the main habitation door and garage doors to allow air to flow around the van. Obviously during the winter this isn’t practical for too long, unless you’re going to sit in your van wearing ALL your clothes 🙂

10 easy steps to reduce condensation in your motorhome - Snoopy in winter coat
Brrrrrrrrrrrr

Air flow is also important to think about if you’re now using your van for a while or you put it into storage. It’s a good idea to leave plenty of air flow by leaving cupboard doors open as well as the fridge and freezer doors.

If you’re leaving your van in storage it’s a good idea to remove everything. It’s tempting to leave food in the cupboard such as tins and unopened packets, but these may attract unwanted furry visitors. It will also stop the air flow and may cause mildew or damp to collect in cold corners.

Last winter we left our van in storage for a couple of months. To reduce the risk of mildew we totally emptied our van. Cupboards, shelves, bedding, sofa throws and garage stuff. We’re pretty organised so we store most things in our van in cupboard baskets or in the range of ‘Really Useful Boxes‘. So it was quick and easy to unload everything into our garage at home. All our van items are packed away and labelled up ready for our next road trip.

Storage Boxes (Really Useful Range) – These are the best storage boxes for home or motorhome, strong, secure and stackable. Really Useful Boxes come in a range of sizes for garage and cupboards. We use these at home too to keep kitchen and garage cupboards organised.

Don’t forget about your sofas, cushions and beds, they all need airflow too. Remember to pull your sofa cushions away from the external walls. Again this will help reduce the risk of condensation and damage to your sofas.

If you have sofa throws then consider taking these out too when your van is not in use. We use sofa throws to protect against muddy dog paws, but the throws are never left in our van when not in use. They’re taken home, washed and packed away until our next road trip. Instead we use dust sheets to protect our sofas and front cab seats, they work really well. (Tip: we use old bedding sheets as dust sheets, so next time you’re having a clear out re-use/re-cycle your old bedding to protect your van).

If you have a bed like ours that drops down from the ceiling, then it’s a good idea to drop it about a foot. The roof gets very cold when the van isn’t being used so this could cause your mattress to become damp. We also prop our mattress up onto a couple of small boxes, just enough to allow plenty of air flow underneath the mattress.

Step 7. Use moisture traps

These are great at capturing moisture, we LOVE these. Again, when your van is not being used for a while place moisture traps around the van. We use 4 large moisture traps, which sit on tea towels to protect the surface:

  • one sits in the bathroom sink
  • a second one sits in the kitchen sink
  • the third one sits on the shelf above the cab front window
  • and the fourth one sits on the living room table

Moisture Absorber Dehumidifier – Unibond Aero 360 Moisture traps, do an amazing job of trapping moisture to keep your van dry.

Unibond Aero 360 Moisture Refill packs – These refill packs last quite a while so are a great option for van storage through the winter.

Step 8. Keep everything dry

Don’t put wet or damp items back into cupboards or wardrobes until they are completely dry. We use our shower or garage to dry out wet items with a vent open and the bathroom door shut.

Body Rag towels are great for quick drying, highly recommend giving these a try. (not an affiliated link).

Step 9. Regularly check for leaks and moisture puddles

It’s so important to check your motorhome, campervan, caravan or RV inside and outside on a regular basis. Make sure everything stays nice and dry. If you spot any moisture then wipe it away and watch that area closely for a week or two. If more water puddles collect then you need to take action quickly. Is it a leak? Or is it an area that can be managed with more air flow or a moisture trap?

Step 10. – Arrange for a yearly habitation check

Consider having a yearly habitation check, which includes a professional damp test. The yearly habitation check is expected during your vans warranty period, but why not invest in this yearly check-up even when the warranty has expired. Keeping up this yearly van health check will help spot problems early and hopefully avoid long term damage and expensive repair bills.

So that’s our 10 Tips To Reduce Condensation in your Motorhome, campervan or RV. We hope you’ve found these useful.

Have you discovered any good tips for managing condensation in your van? If so we’d love you to share them in the comments below.

Miche xx

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