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Is Water Leaking From Air Conditioner Dangerous?


Have you noticed water dripping from your air conditioner? No, not the condensation that forms on the windows when it’s humid. I’m talking about literal leaking water indoors coming from your AC unit. It sounds like the plot of a horror movie, right?

If there’s water dripping from aircon right now, you are in luck because we have an easy guide for you. In this article, we will explain what causes an air conditioner to leak water and what you can do to prevent these situations.

Is Leaking Air Conditioner Dangerous?

water leaking

Water leaking from air conditioners can be a problem, although it is common. If you are wondering if your air conditioner leaking water is dangerous, the answer is yes or no, depending on what is leaking.

If water is leaking from HVAC systems, it is completely harmless and isn’t necessarily dangerous. However, an air conditioner leaking freon is dangerous. Below are some of the dangers you need to know if your AC leaks water.


Water leaking from your air conditioner is unsafe when humidity rises and condensation forms on ceilings inside the house. Standing water from condensation can breed mold and mildew. The mold may grow on your condensate drain line, walls, and furnishings as well as on carpeting in your home. This can be very dangerous for your family’s health.

Electrical Complications

You don’t want the water to drip onto any of the electrical parts of your house or air conditioner. If an air conditioner is leaking water, a short circuit may happen.

Other Health Concerns

Unsafe conditions can lead to a variety of health concerns. A refrigerant leak can be dangerous to your health. You may experience headaches, nausea, and irritation. A coolant leak is harmful to you and the environment. In either situation, repairing a leak will require skilled air conditioning repair. Contact an HVAC tech if your unit is experiencing an air conditioner coolant leak.

Causes of Air Conditioner Leaks

An evaporator coil cools warm air and affects indoor air quality. As the air cools, condensation accumulates, drips into a drain pan, and exits your home with a condensate drain line. That being said, the condensation process forms water inside your air conditioner

To know more, here are some of the causes of an air conditioning system leaking water:

Dirty Air Filter 

The air handler must be able to draw air into your air conditioner, so a dirty air filter can reduce airflow indoors. If your HVAC system has a clogged air filter, it may prevent air from moving freely, which may result in a frozen evaporator coil.

Air filters also need to be changed. We recommend replacing flat filters once a month and pleated filters every three months. Replacing your air filter is essential as it boosts energy efficiency and indoor air quality.

Broken Condensate Pump 

A pump within your air conditioner circulates water from the condensate plate. The drip pan will overflow if the drain pump is not operating, just like when your condensate PVC pipe gets clogged. If you have a malfunctioning condensate pump, you can buy a new one from the hardware store. However, getting a new pump requires an expert to install it.

Clogged Drain Line or Drain Pipe 

An overflowing or cracked drip pan, as well as frozen evaporator coils, can also cause water to drip from your unit. If your system is operating correctly and the condensate drain pipe is clear, there should not be enough water pressure to overfill the drip pan or cause water damage. If you notice water leaking from your air conditioner, you want to be sure the drip pan is clear.

How To Know If the Air Conditioner is Leaking Freon

Freon is hazardous to your health and to the ozone layer. If you want to know if your air conditioner is leaking freon, here are some of the things you may observe:

  • Air that feels warmer or more humid than normal
  • Unit is producing hot air
  • Bubbling or hissing sounds near the air conditioner
  • Sweet odor near the air conditioner
  • Frozen evaporator coil

It’s important to know about air conditioner freon leaks in the event of it, so you must immediately contact the technician of your air conditioning unit for services.

Is It Okay To Use a Leaking Air Conditioner?

Water leaking from the air conditioner is a common occurrence, but there are some things you need to know first—you are not supposed to use a leaking air conditioning unit. An air conditioner leak can cause other problems over the course of time, so you must get it checked as soon as possible.

What To Do If Your AC Unit is Leaking

Turn Off Your AC System

You need to turn off your air conditioner as soon as you notice a leak. You may fix the leak once you’ve found it, then switch the appliance back on.

Address Water Leaks

Observe for a water drip. If you find one, it’s likely from your AC unit’s full condensate pan. Use a wet or dry vacuum to suck up any standing water or water in the drain pan.

If you believe mold has grown in your wall or home, you should contact a professional to clean up the area.

Contact an HVAC Professional

If you have a leaking air conditioner, then you should get your air conditioner checked out right away. No one likes to breathe in warm air, especially during the summer months. If the problem is a leak in the system, then it’s important to deal with it quickly before it becomes a bigger problem.

If an appliance fails or is not working properly, it may be best to report the problem to a professional who can figure out what is needed to fix the issue and make sure that everything works as intended.

Final Thoughts

noisy air conditioner

Air conditioning is an essential part of living in the city. We rely on them to keep our rooms cool, which keeps us comfortable. There are several risks that can be associated with an air conditioner even though it is highly useful for us, just like how air conditioner leaking water affects the health of the outdoor and indoor units of the AC. 

It’s important to know how to keep these risks at bay, but first, we must understand what we need to do. Water dripping from your air conditioner may or may not be a big deal for you, but it can be messy if left unattended. 

Contact your local HVAC professional if you experience water leaking from your AC. Your HVAC tech will examine the issues of your AC unit. You can also stop your air conditioner from leaking by requesting yearly air conditioning maintenance and installing an updated HVAC system.

Having a regular check-up helps ensure a worry-free performance, extending the air conditioner’s lifetime and boosting energy efficiency.

JP Reyes

JP has been in the aircon industry for almost as long as he has been alive. As a child JP would help his tatay fix aircon units at their junk shop in Cavite. After graduating UP in the early 2000's, JP then started his own Aircon servicing business and within 5 years had 10 shops in 8 different cities. Fast forward to today and JP brings all his experience and expertise online to give readers trustworthy advice and reviews about Air-conditioning buying, servicing, cleaning and repair in the Philippines.

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