FAQ – RV Moisture and Condensation Control

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What are common sources of air moisture in an RV?

The following are the most common sources of air moisture:

  • Humidity outside the RV
  • Showering and bathing
  • Steam produced by cooking
  • Water vapor as byproduct of burning propane
  • Exhaled air by people and pets

Steps to reducing condensation

The precise conditions under which condensation will form varies due to numerous factors, such as: outside & inside temperature differential, size of recreational vehicle (air volume), ambient humidity, number of occupants and their living habits, etc.

To reduce condensation, take one or more of the following steps:

  • Run a ceiling exhaust fan while showering
  • Run the stove hood exhaust fan to expel moisture caused by cooking
  • Run a dehumidifier
  • Leave closet doors open to prevent condensation in corners
  • Leave cabinets and drawers slightly open to prevent condensation on back walls
  • Use a fan to circulate air in trouble spots

Under extreme conditions it may not be possible to completely eliminate condensation. In those cases make it a point to wipe down wet surfaces with a dry towel and consider adding insulation to the affected areas, if possible.

For a narrative on how we discovered and dealt with condensation, see RV Moisture Control.

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