Why Does My RV Air Conditioner Drip Water Inside?

If you are wondering why your RV air conditioner is dripping water inside, there are a few potential reasons for this common issue. Understanding the causes can help you troubleshoot and resolve the problem, ensuring a comfortable and dry interior for your RV adventures.

1. Condensation Buildup

One of the primary reasons why your RV air conditioner might be dripping water inside is due to condensation buildup. As the air conditioner cools the air inside your RV, moisture in the air condenses on the evaporator coils. This condensed water is collected in a drain pan and removed from the RV through a drain tube. However, if the drain pan or tube is clogged or damaged, the water can leak inside instead.

Here is a step-by-step guide to addressing this issue:

  1. Inspect the drain pan and drain tube for any blockages or damage.
  2. Clean the drain pan using mild soap and water to remove any debris or contaminants.
  3. Clear the drain tube by gently running a wire or pipe cleaner through it to dislodge any clogs.
  4. Ensure that the drain tube is properly positioned and free from kinks or obstructions.

2. Improper Installation

Another possible reason for water dripping inside your RV is improper installation of the air conditioner unit. If the unit was not mounted correctly or if the seals around it are damaged or worn out, water can seep through and enter the RV. Additionally, if the RV is not level, it can affect the condensate drainage system, leading to water leakage.

If you suspect improper installation is the cause, consider taking the following steps:

  • Inspect the mounting of the air conditioner unit and tighten any loose bolts or screws.
  • Check the seals around the unit for any signs of damage or deterioration, and replace them if necessary.
  • Ensure that the RV is parked on a level surface, or use leveling blocks to achieve a proper level.

3. Dirty or Clogged Air Filters

Air filters play a crucial role in the functioning of your RV air conditioner. When they become dirty or clogged with dust, debris, or pet hair, it restricts proper airflow and can cause the evaporator coil to freeze up. Once the coil thaws, excess water may drip inside the RV.

To prevent this, follow these steps to clean or replace the air filters:

  1. Locate the air filters, typically located behind a removable cover on the interior of the RV.
  2. Remove the filters and inspect them for dirt or debris buildup.
  3. If reusable, wash the filters with mild soap and water, then thoroughly dry before reinserting.
  4. If disposable, replace the filters with new ones, ensuring they are the correct size and type.

4. Excessive Humidity or High Outdoor Temperature

In certain weather conditions, such as high humidity or extremely hot outdoor temperatures, your RV air conditioner may experience difficulties removing moisture from the air efficiently. This can result in excess condensation and water dripping inside the RV.

To mitigate this issue:

  • Consider using a dehumidifier inside your RV to reduce excess moisture.
  • Ensure proper ventilation within the RV by opening windows or using vents and fans.
  • Provide shade for your RV or park in shaded areas to reduce the outdoor temperature affecting the air conditioner.

5. Refrigerant Leak

A refrigerant leak in your RV air conditioner can lead to the formation of ice on the evaporator coils. When this ice melts, it can cause water to drip inside the RV. If you suspect a refrigerant leak, it is crucial to have it addressed by a professional HVAC technician who specializes in RV air conditioning systems.

Signs of a Refrigerant LeakSteps for Resolution
Unusual hissing or bubbling sounds from the air conditionerContact a qualified HVAC technician to inspect and repair the leak
Decreased cooling effectiveness of the air conditionerRecharge the refrigerant or repair the leak, as determined by the technician
Ice accumulation on the evaporator coilsThaw the ice and address the refrigerant leak to prevent further issues

In conclusion, if you find your RV air conditioner dripping water inside, it is essential to identify the underlying cause and take appropriate measures to resolve the issue. Regular maintenance, proper installation, and addressing any problems promptly can ensure the efficient and trouble-free operation of your RV air conditioner, keeping your adventures comfortable and dry.