Humidity and moisture wreak havoc on the interior of your RV. Over time, moisture levels can cause smelly problems like mold and mildew. Even worse, interior elements can start to rot or rust leading to long term damage because once the excess moisture leads to deterioration, it can be difficult and expensive to fix. A dehumidifier is really the only option for keeping interior condensation and humidity under control. There are several types of dehumidifiers for RVs, and the one you choose will depend on the outdoor conditions you are in.
1. Location, location, location. The type of dehumidifier determines whether you want a refrigerant version with a compressor or a desiccant dehumidifier. A desiccant dehumidifier uses special moisture absorbing crystals, whereas the refrigerant systems are more like air conditioners. Although the refrigerant systems with compressors can be loud, they are better for hot and humid places like Florida. If you are planning on spending more time in the Pacific Northwest and other cool but damp places, then a desiccant version would work better.
2. Consider moisture absorbers too. If you have a large RV or need a temporary solution to moisture buildup, you can use products that simply absorb moisture via desiccant crystals and do not require any electronic device. These products are good for spots in the RV where the main dehumidifier cannot reach, and are also inexpensive.
3. Prevent the problem. You will get more value and efficiency out of your dehumidifier if you know how to prevent moisture buildup in the first place. Restricting your cooking to outdoor spaces, drying your clothes outdoors under sheltered areas, and improving the insulation in your RV can improve the efficiency of any dehumidifier you buy. If you are not using your RV for long periods and it is kept in a damp climate, always monitor the moisture inside, use desiccant crystals, and run an electric dehumidifier regularly.
