How to Clean Dometic RV Air Conditioner Filter

How to Clean Dometic RV Air Conditioner Filter: 7 DIY Steps

Last Updated on May 1, 2023

Dometic RV air conditioner filter is an essential component that needs to be cleaned regularly to ensure optimal performance. A clean filter helps the unit run efficiently, improves indoor air quality, and extends the RV air conditioning system lifespan. 

Proper maintenance of your Dometic RV air conditioner filter can save you money on costly repairs and replacements. You can clean the air by removing the filter, then vacuum and wash the filter. Keeping the air intake grille clean will keep it from getting clogged again.

This article will guide you through the hassle-free cleaning of your Dometic RV air conditioner filter, ensuring maximum comfort during your upcoming road trips. So let’s dive in.

How to Clean Dometic RV Air Conditioner Filter: DIY Steps Guide

Clean Filter on a Dometic RV Air Conditioner

With frequent usage, the air filters can become clogged with dust, dirt, and debris, reducing the air conditioner’s effectiveness. Here’s a step-by-step guide to cleaning your Dometic RV air conditioner filter:

STEP 1. Turn off the Dometic RV Air Conditioner

Before cleaning, ensure that the Dometic RV air conditioner is turned off. This precautionary measure is necessary to prevent damage to the air conditioner or accidents from handling the filters when the air conditioner is on. To turn off the air conditioner, locate the power switch and toggle it off.

STEP 2. Locate the Air Filter

After turning off the air conditioner, the next step is to locate the air filter, typically found behind the air intake grille on the RV ceiling. You may need a ladder to locate the air filter, especially in RVs with high ceilings. Do not damage the grille or the ceiling while locating the filter.

STEP 3. Carefully Remove the Filter

Once you have located the air filter, the next step is to remove it from the slot carefully. To do this, gently slide the filter out of its slot and place it on a flat surface. Handling the filter carefully to prevent damage, especially if it is washable.

STEP 4. Vacuum or Wash the Air Filter

Examine the filter once it has been removed, and assess how much dirt has accumulated on it. If light debris or dust is settling over the filter, use a vacuum cleaner with a soft brush attachment to remove it. But if your filter has developed thick dirt layers or grime, you may need to wash it with mild soap and water.

To wash the filter, fill a basin with warm water and add mild soap or detergent. Soak the filter in soapy water and gently scrub it with a brush or sponge. Once satisfied with the cleaning, rinse the filter with running water to remove any remaining soap. Be careful not to damage the filter’s pleats during cleaning.

STEP 5. Clean the Air Intake Grille

While removing the filter, grab a soft brush or cloth and clean the air intake grille. The air intake grille often accumulates debris or dust, which affects the air conditioning system’s efficiency. Gently remove any accumulation from the inside and outside of the grille to ensure that the air can move smoothly.

STEP 6. Reinstall the Air Filter

After carefully cleaning and drying the filter, slide it back into its slot. Ensure the filter is aligned with the arrows inscribed on the filter and the slot. Make sure the filter is snugly fitted and secured in the correct position.

STEP 7. Turn On and Test the Air Conditioner

Once you’ve installed the cleaned filter, turn on your Dometic RV Air Conditioner and feel the difference. The unit will now provide better airflow and cooling efficiency, ensuring the RV’s air quality remains healthy and comfortable.

Why Should You Clean the Dometic RV Air Conditioner Filter?

Why Should You Clean the Dometic RV Air Conditioner Filter

Cleaning your RV Dometic AC filter is an essential maintenance task that should be addressed. The filter serves as a barrier between the outside air and the inside of your RV, trapping dust, dirt, and other particles that can negatively impact the air quality within your vehicle.

Here are some reasons you should clean your Dometic RV air conditioner filter:

Better Air Quality

Cleaning your Dometic RV Air Conditioner filter can drastically improve the quality of the air you breathe in your RV. Over time, the filter accumulates dust, dirt, allergens, and other pollutants that compromise the air quality inside the RV.

By cleaning the filter regularly, you ensure that these pollutants do not enter your RV, causing unpleasant odors or health issues. It improves the air quality and provides you with the peace of mind that your loved ones are breathing safe and clean air inside the RV.

Improved Airflow

A dirty and clogged RV air conditioner filter restricts the airflow, making it harder for the AC to cool the RV properly. This causes the AC to work harder than it should, lower its efficiency and increases energy consumption.

Cleaning the filter frees up any blockages and dirt that may obstruct the airflow. This results in more efficient cooling and the AC working optimally, providing you with the comfort you desire during long journeys.

Prolonged AC Life

The longevity of your Dometic RV Air Conditioner is directly related to how well it is maintained. Frequent cleaning and maintenance of your RV air conditioning filter ensure that your AC runs efficiently, reducing its wear and tear.

A clean filter also reduces the risk of potential breakdowns or system failures, prolonging the lifespan of your AC. Investing a little time and effort in cleaning your filter saves you from the hassle and cost of replacing or repairing your RV Air Conditioner.


Cleaning your Dometic RV air conditioner filter regularly is an easy and cost-effective way to keep your AC running smoothly and efficiently.

When a clogged or dirty filter causes restricted airflow, it can strain the system, leading to higher electricity bills and potential breakdowns requiring more expensive repairs.

By simply replacing or cleaning the filter on a regular basis, you can save money each month while ensuring that your air conditioning unit operates at peak efficiency during those hot summer days.

Easy Maintenance

Regular maintenance of the Dometic RV air conditioner filter requires no special tools or knowledge. All you need is a little time and some household cleaners such as dish soap or degreaser, to remove stubborn dirt or debris from the mesh screen material.

To ensure even greater efficiency from your AC unit, it’s also recommended that you vacuum out any accumulated dust at least once every few months to keep everything running as smoothly as possible.

With its low cost and ease of use, it’s no wonder this simple task is one of the most important parts of maintaining an efficient air conditioning system in an RV!

What do you need to know about cleaning the Dometic RV air conditioner filter?

What do you need to know about cleaning the Dometic RV air conditioner filter

When cleaning the Dometic RV air conditioner filter, it’s essential to do a thorough job to ensure the longevity of your unit and the quality of the air you’re breathing inside your RV. Here are some tips for a thorough cleaning:

  1. Use compressed air: After removing the filter from your unit, use compressed air to blow out any debris that may be stuck in the filter. This will help loosen any dirt or dust that may be clinging on.
  2. Soak in warm water: Fill a bucket with warm water and add a mild detergent or cleaner. Place the filter in the bucket and let it soak for at least 15 minutes. This will help break down any remaining dirt or grime.
  3. Scrub gently: After soaking, use a soft-bristled brush to scrub away any remaining debris on the filter gently. Be careful not to scrub too hard as this can damage the filter.
  4. Rinse thoroughly: After scrubbing, rinse the filter thoroughly with clean water until all soap residue is removed.
  5. Let dry completely: Allow the filter to air dry completely before reinstalling it into your unit. Ensure it’s completely dry before putting it back in place, as damp filters can cause mold growth and other issues.

When is it time to clean the Dometic AC filter?

The Dometic RV air conditioner filter gets clogged with dirt, dust, and other stuff as time passes. This can lead to several issues that affect your RV’s air conditioning system performance. Here are some signs it is time to clean:

Reduced Airflow

One of the most noticeable signs that it’s time to clean your Dometic RV air conditioner filter is reduced airflow. If you notice that the air coming from your vents is weaker than usual, or if it takes longer for your RV to cool down, it could be due to a dirty filter.

Unpleasant Odor

Another sign indicating it’s time for a cleaning is an unpleasant odor from your RV’s air conditioning system. A dirty filter can trap moisture and bacteria, creating a musty smell that permeates your vehicle.

If you notice an unusual odor coming from your vents, it’s best to check the filter and clean or replace it as needed.

How often do you clean the Dometic RV air conditioner filter?

In general, cleaning the filter every 2-4 weeks during peak usage times is recommended. If you’re using your RV less frequently or in a cleaner environment, you can stretch that out to 6-8 weeks between cleanings.

It’s important to note that a dirty filter can cause various issues with your AC unit. First and foremost, it will reduce the system’s efficiency by restricting airflow. This means that your AC will have to work harder to cool your RV, which can lead to increased energy consumption and higher electric bills.

What happens if the RV Dometic AC filter is too dirty?

What happens if the RV Dometic AC filter is too dirty

If your RV Dometic AC filter is too dirty, it may hamper the airflow through the unit, leading to reduced cooling performance. Dirt and debris can clog the filter, reducing the air conditioner’s overall efficiency.

This often results in warm air blowing out of the back of the unit, which indicates that it’s time to clean or change the filter. It’s essential to clean or replace your Dometic RV AC filter regularly to ensure your air conditioner is functioning at its best.

Will cleaning my Dometic RV AC filter make it colder?

Cleaning your Dometic RV AC filter can make it colder. A clean filter will allow better airflow throughout the unit, improving cooling performance. A dirty filter can hinder the airflow leading to reduced efficiency in the cooling process.

Also, a clean filter can help prevent the evaporator coils from freezing, which can also impact the cooling capacity of your air conditioner. It’s advisable to clean your Dometic RV AC filter regularly to enjoy the optimal cooling performance.

Can I wash the Dometic RV AC air filter with warm water?

You can wash Dometic RV AC filters with warm water. However, it’s important not to use hot water as it can damage the filter’s mesh or structure. Warm water makes removing stubborn dirt and debris from the filter easier, making it more effective in restoring the filter’s air filtration efficiency.

Before washing the filter with warm water, remove the filter from the air conditioner unit and submerge it in a water basin with mild detergent soap to remove stubborn dirt and debris. Rinse the filter with warm water, and let it dry thoroughly before reinstalling it in the air conditioner unit.

Keep Your Dometic RV Air Conditioner Running Smoothly: Clean that Filter

Cleaning your Dometic RV AC filter is an essential task that should never be overlooked. Neglecting to clean the filter can lead to various negative consequences, including reduced airflow and decreased efficiency, resulting in higher energy bills and unnecessary wear and tear on your unit.

You’ll need a few tools and some safety considerations when cleaning your RV air conditioner filter. You can successfully remove and clean your filter by following our step-by-step instructions and implementing our tips.

Remember, taking care of your Dometic RV air conditioner filter doesn’t have to be daunting. With these guidelines in mind, you can confidently tackle this chore and maintain optimal performance for your unit.

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