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Why condensation occurs
Condensation occurs when warm moist air meets a cold surface. The level of condensation will depend on humidity levels, how moist the air is and how cold the surrounding surfaces are.
If the temperature falls below the dew point temperature, it is quite normal for condensation to occur on any material within a camper, caravan or motorhome that is cold, for example the external walls, plastic windows, etc.
When condensation occurs
Condensation occurs usually in winter months because ambient temperatures are colder (resulting in colder surfaces) and windows and roof vents are opened less so the moist air cannot escape.
Where condensation occurs
Condensation will occur where warm moist air is put into the atmosphere in areas such as in bathrooms (during showering) and in the kitchen areas (during cooking).
In the enclosed space of an RV, the moist air from the kitchen or bathroom areas will inevitably transfer to the rest of the vehicle, which in turn condenses on cold surfaces leading to visible water droplets. This issue is compounded by warm moist air being generated from normal breathing.
Condensation will also form in cold areas where air movement and ventilation is restricted (e.g. cupboards, wardrobes, under beds, etc.)
What is important
It is important to provide ventilation and air flow, so warm moist air can escape, or be externally cooled, and to use the heating reasonably by not making the RV too warm such that occupants perspire, as this will only serve to generate more moist air and therefore more condensation.
It is also important to wipe up any condensation from surfaces to reduce an accumulation of moisture inside the RV and avoid mould forming.
How can you prevent condensation?
For more information speak to your local Jayco dealership. You can find your local dealer here.