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How to Stop Condensation in an RV

    Updated December 12, 2022

    One of the main things that damages the interior of an RV or camper is condensation. Additionally, it can eventually result in health problems because of the mold and mildew in a small area. This useful advice will assist you in preventing condensation within your RV and keeping extra moisture and humidity out of your RV.

    If you’ve unluckily found condensation on the ceiling of your RV, you probably want to know why it happened. The straightforward explanation is that sections of your ceiling have developed condensation due to some combination of moisture and temperature change. Finding the source of the moisture is crucial since prolonged moisture exposure might result in water damage or mold growth within your RV. Your RV’s air conditioner is probably one of the most frequent sources of condensation.

    What Causes Condensation Inside an RV?

    Find the cause of the issue first, please. What leads to condensation in RVs and motorhomes? The two main factors are temperature and moisture. Warm air in your comfy RV releases moisture and forms tiny water droplets when it comes into touch with colder surfaces like windows, metal window frames, or even walls.

    By cooling the interior of the RV to the same temperature as the outside air, you could prevent condensation from accumulating, but you would then feel uncomfortable cold. Condensation in camper vans might be avoided by warming the outside air, but moving the RV to a different region of the country is not an option. Therefore, eliminating moisture from the air is the greatest technique to stop condensation in RV rigs.

    Warm, humid outside air blows inside a cold RV, hitting the cold interior walls and windows. This may occur if you have air conditioning indoors while it’s hot and humid outside (or in early spring when RV is still cold inside from being in storage all winter).RV interior walls and windows being assaulted by warm, humid air produced inside. This sometimes occurs when individuals utilize RVs for full-time living in cold locations or for winter camping with inadequately insulated walls and single-pane windows.

    How Do I Stop Condensation in My RV While Camping?

    Unfortunately, it is more difficult than it seems to figure out how to keep moisture out of camper vehicles. This is particularly valid when the rig is in operation. The humidity in your RV may be high simply because of the moisture in the outside air, depending on the weather and where you are. Many of our daily activities actually add moisture to the air.

    As a result, you’ll probably need to experiment to find a mix of tips that work for you while trying to figure out how to prevent condensation in RV campers when they’re in use. Here are some suggestions:

    Warm Things Up

    Even though condensation is caused by warm air interacting with cold air, you can actually reduce condensation generation by raising indoor temperatures to a sufficient level. This is due to the fact that increasing the interior temperature should likewise increase the temperature of the rig’s glass and other cold surfaces. This ought to considerably reduce condensation on RV windows.


    As was previously noted, reducing air moisture will also be helpful for individuals who need to know how to prevent condensation on RV windows and walls. In the winter, your RV should include a dehumidifier because of this. This inexpensive device will dramatically lower humidity.

    Vent Fans

    Utilizing your vent fans will benefit your dehumidifier. There should be a vent above your stove and one or two on your RV’s ceiling. When it begins to feel humid, make a point of opening them and turning on the fans a few times throughout the day.


    You might even crack a window as an alternative to or even in addition to opening the vents. By doing so, moisture can escape and dryer outdoor air can enter. Some individuals even discover that a tiny RV window fan aids in circulating the air. It will only need to be used twice or three times daily for a short period of time.

    How Do I Get Rid of Condensation in my RV While It’s in Storage?

    You might be asking what to do to prevent condensation in your mobile home while it’s parked now that you know how to lower humidity in a travel trailer or motorhome while it’s in use. Fortunately, since usual moisture-producing activities—like cooking and taking a shower—don’t take place inside an RV when it’s not in use, condensation can be avoided far more easily. Furthermore, since there won’t be any heaters operating, the temperature inside should be comparable to the outside, reducing the likelihood of condensation even further.

    Even so, it never hurts to go the extra mile to prevent returning to an RV with too much moisture. Fortunately, that extra step is very easy. When an RV is being stored, the cabinets and closets are typically where we find moisture accumulating. As a result, we advise installing the DampRid in cabinets and other small locations while still leaving cabinet doors open. While the RV is in use, moisture-absorbing items can also be employed. In fact, for your upcoming cold-weather camping trip, we advise combining this advice with the ones above.