Why Does My RV AC Drip Water Inside?

Many RV owners have experienced the frustration of finding water dripping inside their RV from the air conditioning unit. This can be inconvenient, damaging to the interior, and a cause for concern. Understanding why your RV AC is dripping water inside is crucial in order to address the issue and prevent further damage.

Inadequate Drainage

One common reason for water dripping inside the RV from the AC unit is inadequate drainage. As the air conditioner cools the air, it also removes moisture from it. This moisture is collected in a drain pan, which is then drained outside the RV through a drain tube. However, if the drain tube becomes clogged or blocked, the water will overflow and end up dripping inside the RV.

To prevent inadequate drainage, it is important to regularly inspect and clean the drain tube. Ensure that it is free from any debris or obstructions that may hinder the proper flow of water. In addition, inspecting and cleaning the drain pan itself can also prevent any buildup that may lead to overflowing.

Condensation Issues

Another reason for water dripping inside the RV from the AC unit is condensation issues. When warm air meets the cold air conditioner coils, condensation occurs. This condensation typically drips into the drain pan and gets drained outside. However, if the AC unit is not properly insulated or sealed, condensation can form on the unit itself and drip into the RV.

To address condensation issues, it is recommended to inspect and seal any gaps or areas where cold air may escape and warm air may enter. This can be done using insulation foam or sealing tape. Additionally, ensuring that the AC unit is properly installed and leveled can also prevent condensation from forming on the unit.

High Humidity Levels

High humidity levels can also contribute to water dripping inside the RV. When the humidity is high, the air conditioner has to work harder to cool down the air and remove the moisture. This increased workload can result in excessive condensation, which may overwhelm the drain system and cause the water to leak inside.

To combat high humidity levels, it is beneficial to use dehumidifiers or portable air conditioners in conjunction with your RV’s AC unit. These additional units can help reduce the overall humidity inside the RV, lessening the strain on the AC unit and minimizing the likelihood of water leakage.

Faulty Drain Pan or Drain Tube

A faulty drain pan or drain tube can also be the cause of water dripping inside the RV. Over time, these components may develop cracks, become damaged, or deteriorate, leading to leaks and water intrusion.

If you suspect a faulty drain pan or drain tube, it is advisable to have them inspected and replaced if necessary. Professional RV technicians can assess the condition of these components and provide the appropriate solutions.

Inadequate AC Unit Size

Sometimes, water dripping inside the RV from the AC unit can be a consequence of an undersized unit. If the AC unit is not appropriately sized for the size of the RV or the cooling load, it may struggle to adequately cool down the air and remove the moisture.

If you suspect that the AC unit is undersized, it is recommended to consult with an experienced RV technician. They can assess the cooling requirements of your RV and recommend a properly sized air conditioning unit that will effectively control the humidity levels and prevent water leakage.

In conclusion, several factors can contribute to water dripping inside your RV from the air conditioning unit. Inadequate drainage, condensation issues, high humidity levels, faulty components, and an undersized unit can all be potential culprits. By identifying and addressing these issues, you can ensure a comfortable and water-free RV experience.