Condensation in an RV may seem minor at first, but if left unchecked, it can lead to serious water damage, mold growth, and health risks. RVs are enclosed spaces where activities like cooking, showering, and even breathing increase humidity, especially when outdoor temperatures are cooler. Managing moisture effectively is essential for protecting your RV and keeping your living space healthy.

Why Condensation Happens
Condensation occurs when warm, humid air comes into contact with cooler surfaces like windows, walls, or ceilings. While you may notice it on visible surfaces, condensation often forms in hidden areas, such as:
- Under mattresses
- Inside cabinets or storage areas
- Around slide-out edges or roof seams
Over time, trapped moisture can damage materials, compromise structural integrity, and create mold, which is difficult and expensive to remove.
Tips to Prevent RV Condensation
- Ventilate Properly
- Always use roof vents and fans when showering or cooking to remove moisture at the source.
- Open windows when possible to improve airflow and reduce humidity.
- Use Dehumidifiers
- Small portable dehumidifiers, built-in RV AC systems, or moisture absorbers like DampRid can help reduce indoor humidity.
- Position dehumidifiers strategically to target areas prone to condensation.
- Encourage Air Movement
- Use small fans to circulate air, especially in corners, under beds, and behind furniture.
- Consider breathable mattress pads to prevent moisture accumulation under mattresses.
- Control Water Sources
- Wipe down wet surfaces after showers or spills.
- Remove standing water from sinks, tubs, or floors to prevent it from evaporating back into the air.
- Choose Heat Sources Wisely
- Furnaces are generally safe, but some propane heaters add moisture. Always ensure proper ventilation if using alternative heating.
- Maintain Exterior Seals
- Regularly inspect and reseal the RV roof, slide-outs, vents, and windows to prevent leaks.
- Proper exterior maintenance reduces the amount of water that can enter the RV and keeps condensation under control.
Protect Your RV and Your Health
By combining ventilation, dehumidification, air circulation, and proper maintenance, RV owners can significantly reduce condensation and prevent mold. This not only protects the structural integrity of your RV but also ensures a clean, safe, and comfortable living environment.
At California RV Specialists, we recommend routine inspections, timely roof and seal maintenance, and proactive moisture management to keep your RV in top condition year-round.
DampRid Moisture Absorber Hi-Capacity Bucket, 4 lb.
DampRid Fragrance Free Disposable Moisture Absorber with Activated Charcoal, 18 oz (Pack of 3)
