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Why Is My AC Leaking Water?

Your air conditioner is built to brave extreme conditions while regulating the heat and humidity of the indoor air. With proper and regular maintenance, the AC unit should function as expected throughout the year. However, at some point, you may notice unusual happenings, such as water leaks or ice build-up.

These problems are common, but, unfortunately, they affect the efficiency of the AC and sometimes your home. Therefore, this is something you want to avoid or find a solution to when it happens. This article will look at what causes an AC to leak water and how to avoid it. 

5 Major Causes of AC Water Leaks

Most AC systems have an outdoor and indoor unit, and, in this case, the indoor unit experiences most of these leakages. Although multiple factors can cause the leakages, let us focus on the five most common ones.

1. Clogging in the drain line

The drain line is responsible for draining water released when the AC evaporator converts the refrigerant from liquid to gas. Clogging happens when dirt, dust, and other debris build-up forming a barrier in the drain line and restricting the flow. When this happens, the water starts to leak inside your home, causing problems like flooding and damages. Cleaning the drain line is a hassle-free chore that you can do if you have the right supplies to help prevent AC water leaks.

2. Freezing in the evaporator coil 

This is a common problem that results from low refrigerant or freon. Low refrigerant, which happens primarily to freon leakages, causes a drop in pressure in the AC. Eventually, the AC will strain to evaporate the humid air, and condensation will form on the evaporator coils. Subsequently, when the ice melts, it will overflow the drain pan and leak off the AC. This is more of an indirect cause of AC water leaks. Freezing in the evaporator can be easily fixed by an HVAC technician on site. 

3. Broken condensate pump

If your AC unit has a condensate pump that is supposed to aid in draining water, it could malfunction and stop pumping water. This pumping action is essential, especially when the AC is installed below ground level, like the basement. Ineffective pumping leads to an overflow of water in the drain pan and eventually leakages. This can be avoided with regular checkups to ensure the pump is functioning properly at all times.

4. Damaged condensate drain pan

The drain line works in tandem with another AC part known as the drain pan. This pan acts as a reservoir. To elaborate, all the water from condensation is stored here. If this pan is damaged, say by rust or debris, it fails and ends up leaking water where it’s not required. Drain pans are replaceable AC parts that are not as long-lasting as other parts. Therefore, a rusty drain pan should be replaced to avoid AC leakages. 

5. Dirty or clogged air filters

Air filters are responsible for allowing a smooth flow of air to reach the evaporator coils. When dirty filters limit this air movement, the AC will struggle to cool air since it’s not getting enough of it, and, eventually, ice will start to form. The water you see leaking comes from the melting of this ice. Changing air filters periodically reduces the chances of AC water leaks by far. 

Need to Talk to an HVAC Expert?

Don’t let pesky issues like AC water rob you of peace of mind. Because let’s face it, when your air conditioning is acting up, the last thing you want to hear is that the next available appointment isn’t until next week, or we have to wait for parts. At Anthem, this never happens. Contact us or call us on 760-892-2621 for professional HVAC help today. 

Anthem is one of the largest air conditioning repair companies in the Coachella Valley. It has the service personnel and product stocked to keep you cool when it’s screaming triple digits outside. We service the Coachella Valley and Riverside seven days a week, and our technicians are ready to go any time of the day.

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