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How to Clean Filter on Dometic RV Air Conditioner

When it comes to maintaining the efficiency and longevity of your Dometic RV air conditioner, regular cleaning of the filters is crucial.

A clean filter ensures that your air conditioner functions optimally, providing you with cool and clean air during your travels.

In this comprehensive guide, we will walk you through the step-by-step process of cleaning the filter on your Dometic RV air conditioner.

We’ll also address some common questions and provide expert tips to help you achieve the best results.

So, let’s dive in and learn how to clean the filter on your Dometic RV air conditioner effectively!

How to Clean Filter on Dometic RV Air Conditioner: Step-by-Step Guide

Step 1: Turn Off the Air Conditioner

Before you begin the cleaning process, it is important to turn off your Dometic RV air conditioner.

This ensures your safety and prevents any damage to the unit during the cleaning process.

Step 2: Locate the Air Filter

The air filter is usually located behind the return air grille of your Dometic RV air conditioner.

This grille is typically situated on the interior ceiling or wall of your RV.

Remove the grille carefully to access the filter.

Step 3: Remove the Filter

Once you have accessed the filter, gently remove it from its housing.

Take note of how the filter is positioned so that you can reinstall it correctly after cleaning.

Step 4: Inspect the Filter

Examine the filter for any signs of dirt, dust, or debris accumulation.

A clogged or dirty filter can hinder airflow and reduce the efficiency of your air conditioner.

If the filter appears excessively dirty, it’s time to clean or replace it.

Step 5: Clean the Filter

Option 1: Vacuum Cleaning

Using a handheld vacuum cleaner with a brush attachment, carefully vacuum the filter to remove loose dirt and debris.

Ensure that you cover the entire surface of the filter, including the corners.

Option 2: Rinse Cleaning

If the filter is heavily soiled, you can rinse it under running water.

Gently wash both sides of the filter with mild dish soap or a filter cleaning solution.

Be cautious not to use excessive force as it may damage the filter material.

Step 6: Dry the Filter

After cleaning the filter, allow it to air dry completely.

Ensure that the filter is completely dry before reinserting it into the air conditioner.

Damp filters can promote mold or mildew growth, leading to unpleasant odors and reduced air quality.

Step 7: Reinstall the Filter

Once the filter is dry, carefully place it back into its original position.

Ensure that the filter is correctly aligned with the air conditioner’s housing to maintain proper airflow.

Step 8: Clean the Grille

Before you finish the cleaning process, take a moment to wipe down the return air grille with a damp cloth.

This removes any dust or dirt that may have accumulated on the surface.

Step 9: Turn On the Air Conditioner

Now that you have cleaned the filter and reinstalled it, you can turn on your Dometic RV air conditioner.

Enjoy the cool and refreshing air that your clean filter will provide!

FAQ’s (Frequently Asked Questions)

How often should I clean the filter on my Dometic RV air conditioner?

It is recommended to clean or replace the filter every 30 days or as needed. Factors such as usage frequency, air quality, and environmental conditions may influence the frequency of cleaning.

Can I use a different cleaning solution to clean the filter?

It is best to use a mild dish soap or a filter cleaning solution recommended by the manufacturer. Avoid using harsh chemicals or abrasive cleaners, as they can damage the filter material.

My filter is damaged. Should I clean or replace it?

If your filter is damaged or torn, it is recommended to replace it with a new one. Cleaning a damaged filter may not restore its efficiency, and it may allow dust and debris to bypass the filtration system.

Can I wash the filter in a washing machine?

No, it is not advisable to wash the filter in a washing machine. The agitation and high water pressure can damage the filter material, rendering it ineffective.

Is it necessary to clean the filter if I use my air conditioner infrequently?

Even if you use your air conditioner infrequently, it is still essential to clean the filter regularly. Dust and debris can accumulate over time, hindering airflow and reducing the overall efficiency of your unit.

Can I clean the filter with compressed air?

Using compressed air to clean the filter is not recommended. The high-pressure air can damage the filter material and push dirt and debris further into the filter, making it more difficult to clean.


Maintaining a clean filter is crucial for the optimal performance of your Dometic RV air conditioner.

By following the step-by-step guide provided in this article, you can easily clean the filter and ensure that your air conditioner continues to provide you with cool and clean air during your RV adventures.

Remember to clean the filter regularly, inspect it for damage, and replace it when necessary.

With proper filter maintenance, you can enjoy a comfortable and refreshing environment inside your RV.