Why An RV Air Conditioner Leaks When It Rains (And How to Solve It)

Many people wonder why their RV air conditioner leaks when it rains.

It is definitely a hassle when this happens. Moreover, it is the last thing you want when you are camping on a rainy day, combined with a leaky AC.

So, we’ll investigate the potential reasons why this happens and how you can solve it once and for all. Let’s jump right into it.

RV Air Conditioner Leaks When It Rains – Why It Happens and How to Fix it

An air conditioner leak can be a cause of alarm for most people.

After all, why does it even happen, right?

So, let us look into the possible reasons behind the leaks and what may have gone wrong.

1. Damages to the Rubber Gasket and Mounting Bolts

First, let us talk about the mounting bolts and gasket.

When was the last time you checked these parts of your air conditioner?

When you mount the unit onto your RV, it is a no-brainer that the bolts and rubber gasket have to be securely locked into place.

But over time, especially while your RV is in transit, these components tend to shift. Moreover, damages can happen as time goes on, which can contribute to leaks.

What the rubber gasket does is to prevent water from seeping through the connection points or seals on your AC. However, constant exposure to harsh external elements can cause the rubber to break down.

Thus, you should check the rubber gasket and look for signs of damage. Perhaps it is already too brittle or has gone hard. If it is no longer flexible, it is possible that it no longer creates a seal. Hence, leaks are likely to happen.

If this is the case, you will need to get a replacement for the rubber gasket.

Another thing to consider is the mounting bolt. This is responsible for keeping the gasket firmly in place. With the vibration in the vehicle as it is on the go causes the mounting bolts to loosen. So, you need to inspect this unit and make sure it is not loose or have gone missing.

By making sure that your rubber gasket and bolts are in great condition, you can prevent leaks. Furthermore, this can also help ensure a silent operation for your air conditioner.

2. Cracks on Your RV roof.

Is it really your air conditioner that causes the leak?

Or perhaps, it is your RV roof no longer in good condition?

One way to really know the answer is by checking the roof and being certain that there are no damages to it.

Sometimes cracks tend to form due to intense weather elements. Hence, there are leaks indoors when it rains.

Inspect the rubber roofing and look for cracks and signs of wear. If you notice these things, then you will have to replace the roof.

Additionally, you may want to reinforce or raise the area surrounding the opening on your air conditioner. You can use trim rings, gaskets, and shims, which can help improve the stability of the area while eliminating risks of water pooling at the opening when it rains.

3. Roof Damage

Sealant is your best friend when it comes to nasty leaks in your RV.

But before you put it just about anywhere, you first need to know the right spot that needs it the most.

Inspect your RV roof and check the roof seams. It is possible that there are gaps and cracks, which are not quite visible to the naked eye.

Check the air conditioning unit and determine any deterioration to the seals and bolts.

Replace components that need to be discarded due to damage such as a brittle rubber gasket. But if the leak is coming from a crack on the roof, then you can use your sealant to cover this damage and prevent water from seeping through it.

4. Missing AC Shroud

If your AC is leaking when it rains, then it could be possible that the shroud is either broken or missing.

This is the cover that prevents leaves, debris, and water from penetrating through the unit. In case this is the possible reason behind the leak, an easy fix is to first climb and check if it is really gone.

Then, you can simply purchase the right model that you need after checking the model and make of your unit. It is also something that your manufacturer can help you with in locating the right model to buy.

Read More: Expert Tips on How To Attach A TV Mount To An Rv Wall

Maintenance Tips to Prevent RV Air Conditioner Leaks When It Rains

maintenance tips to prevent rv air conditioner leaks when it rains

Aside from identifying the source of the leak, you need to have a regular AC maintenance routine to keep your unit in good condition.

Prevention is always better than cure, as they say. So, here are some things to keep in mind to prevent these leaks from happening once again in the future.

1. Regular Inspection

Check the unit and the surrounding areas not only when there’s a leak but as a part of your maintenance routine.

Make it a quarterly thing to climb up on the roof and inspect how everything is working up there.

The shroud should be in good condition, as well as the rubber gasket and the mounting bolts. Perhaps, you can also see if there are caulking issues to be addressed, which can potentially cause leaks in the near future.

2. Protect Your AC with a Cover

Are you planning on not using your RV for a period of time?

If this is the case, you need to shield it from external elements that can cause damages to it.

Buy an AC cover specifically for RV use, which can protect the unit from the heat, ice, and rain.

This is also good to use when you are simply storing your RV somewhere for an extended period, specifically in the winter or harsh heat during the summer.

Bottom Line

Rain is not always a bad thing as it helps to clean the air and cool the temperature.

But if it is leaking in your RV each time it rains, then that is not fun at all.

Thus, you may want to look into these options if the RV air conditioner leaks when it rains. It can help you to locate the problem and do the right thing that can solve it best.

We hope these tips have been helpful for addressing your issue with RV conditioner leaks when it rains. Now, you can stop worrying and simply go back to these guidelines and tips that can be very helpful for you.

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