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Why Is My Aircon Leaking?

Why Is My Aircon Leaking?

One of the things that can make a hot summer’s day worse is a leaking air-conditioner that is spilling warm air.

This can be quite irking, especially in places where AC’s are an essential part of daily life. A leaking air conditioner almost always spoils the mood and calls for a lot of repair work (that no one likes).

There can be many reasons why an AC could be leaking, and some of those can be identified at home. If you are looking for a bit of direction on spotting a leak and understanding why it is happening, you’re in the right place. Take a moment to go through our guide for further information.

Now, without further ado, let’s jump right into it.

Why Is My Aircon Leaking?

As much as we love to use air conditioners, the damage and unending repairs are inevitable; one comes along with the other. Now, most of the common leaks can be differentiated under indoor and outdoor leaks.

Indoor leaks are usually filter related like blocked or clogged filters. On the other hand, outdoor leaks can be regarding the improper working of moisture pans and coils. While you can’t always fix these at home, it can lessen the expenses by knowing the different kinds of leaks to expect.

1. Blocked Filter

One of the most common reasons for a filter to leak is a blocked aircon filter. This usually happens due to dust and dirt that flies into the filter and then eventually blocks it. Furthermore, this blockage causes the cold air from the aircon not to flow out properly, and it starts forming ice on the filter.

If you see ice water leaking out of the air con, check the filter first. Once that ice melts, you have an AC leak on your hands. The good thing here is, most of these leakages can be fixed just by a quick clean from time to time.

2. Air Leak

Another common issue that could have your air conditioner dripping is an air leak. An air leak is when the air does not travel through the vents as it should, and it ends up leaking out. Because the air is not passing correctly, it is not allowing the AC to work to the best of its abilities.

Since the air conditioner is not working as it should, this causes it to leak and drip. The best way to fix it would be to conduct a thorough check of the pipes to find the leak. Keep in mind that you might need professional help for this one.

3. Dirty Filter

The next very common reason is a dirty filter. What happens is that if the filter is dirty, it obstructs the evaporator, leading to lower temperatures inside. This is a bit different from a blocked filter, as this has more to do with the evaporator.

Blocked Airfilter On Ac Unit

Having a dirty/blocked, or even slightly clogged filter will lead to the air conditioner leaking and dripping. So, in either situation, the filter should be the first thing to check.

4. Pump Issues

Broken or damaged pumps can also be an issue that can cause AC leaks. Located below the cooling coil, an AC pump usually drains water out of the AC. So naturally, having a broken pump would mean the water is not being removed properly from the system hence causing issues in the AC.

It is usually dirt and dust that clogs up a pump and causes it to stop working. Hence it is essential to keep checking it and cleaning the AC system from time to time.

5. Drain Line

Drain line clogs in any appliance can cause issues, and air conditioners are no different. With time, mould or debris can get into the drain line and cause it to clog, which then hampers the flow of water. It prevents the water from flowing out even if the pump ensures the water flows out, and this clog causes some of the water to leak out.

6. Leaking Condenser Coil

Sometimes the AC can leak or stop working due to the unit outside the house. The unit outside is called the compressor and has a condenser coil inside that has high exposure to dust and debris. Due to that, it can end up with the coil getting blocked, causing the unit only to spill out warm air into the house.

Leaking Condenser Coil On Ac

If you notice this happening, the best thing would be to turn the whole unit off and call the professionals to fix it. Turning the unit back on at this point will only make it worse.

7. Lack of Maintenance

Maintenance of appliances is vital to ensure it works to the best of its capabilities. So even with the air conditioner, there is a need to get it serviced from time to time to make sure it works properly. This is especially the case if the AC has been off for more extended periods.

The best thing to do in a situation like this is call in a professional to help. Long periods of non-use of the air conditioner can often lead to blocked filters, air vents and damaged coils. We believe an expert is better off handling these issues.

8. Installation Issues

There are instances when there is an issue with the AC right from the moment it is installed. The best way to avoid such a problem is to call in the right people to install the unit and overlook the installation process. Furthermore, keep an eye out to ensure the AC is being installed with a slight incline to avoid any leakage issues.


Q1. Are these leaks dangerous?

As long as you notice the leak and turn the unit off, it should not be an issue. At the end of the day, it is just water leaking out of the air conditioner. However, a delay in fixing the problem can cause property damage like mould and mildew growth. So, it is crucial to catch these issues at an early stage.

Q2. What are some of the first steps I can take?

As soon as you notice an issue with the AC, like a leak, the first thing to do would be to turn it off. We do not recommend looking for the source of the leak while the unit is still on. This is mainly because keeping it on can amplify the issue and lead to a ton of wasted energy.

Moreover, it is advisable to keep the unit off until the issue has been located and sorted out.

Summing It Up

On that note, we come to the end of this short guide that explains all the possible reasons your AC could be leaking.

We would like to give you one last piece of advice. Issues like AC leaks are not something to be taken lightly. Hence, the only DIY work we advise you to do is to find the leak’s location. If that is not possible, leave it to the professionals. The idea is not only to fix the problem but also to ensure it doesn’t happen again.

With that, we’ve come to the end of our guide. We’ll be back with more helpful tips soon.

See you next time!