dirty evaporator coil

3 Reasons Your Air Conditioning Unit Is Leaking Water

Is water dripping out of your indoor air conditioning unit and soaking into your ceiling or attic floor? This is a sign that there’s an urgent issue with your air conditioner. Below, we’ll explain three of the most common reasons for this issue and what needs to be done to fix it.

1. Old Drain Pan

During the cooling process, your air conditioner’s indoor unit absorbs heat and draws moisture from your home’s hot air. The heat gets absorbed by the refrigerant in the evaporator coil. The moisture, however, trickles down the coil and collects in a drain pan.

As it ages, this drain pan can rust and crack, and the water collecting in it can start to leak out into your home. The solution here is simple: replace the pan.

2. Clogged Drain Line

The water that collects in the drain pan (mentioned above) exits your home through a drain line. Dust, mold, and other debris can create a grimy clog inside that pipe that blocks water from flowing out. Instead, the water fills up the drain pan and spills over onto your attic floor. An HVAC technician can solve this problem by unclogging and cleaning your drain line so that water can flow out freely once again.

3. Frozen Evaporator Coil

Remember how we mentioned that there’s refrigerant in the evaporator coil? This makes the coil extremely cold. However, if ice forms on the coil, it will cause significant issues for your air conditioner. The biggest problem is that your air conditioner will lose its cooling power and start to overheat. Also, as that frost gradually melts and drips down, that water can flood the drain pan and spread into your home.

So how does ice form on the evaporator coil? The most common reason this happens is a lack of airflow through your AC system. Usually, the culprit is a dust-clogged air filter. When your system’s air filter gets blanketed in dust, your system struggles to pull air through it. Consequently, there is very little warm air flowing over your cold evaporator coil, and the coil can start to form frost.

Low refrigerant levels (due to a refrigerant leak) or a buildup of dust and grime on your evaporator coil can also cause it to form ice. Because refrigerant is toxic and harmful to the environment if mishandled, a trained and certified HVAC technician will need to solve this issue.

Preventing Future AC Issues

Issues with air conditioner leaks can almost always be prevented during an annual AC maintenance appointment. While tuning up your indoor and outdoor AC units, your HVAC technician will have a chance to examine their components for any potential problems that could cause leaks, efficiency issues, or breakdowns. Routine maintenance also helps your air conditioner continue to function at peak performance, which helps keep your home comfortable and your energy costs low.

Request AC repairs in Arlington & Dallas-Fort Worth today: (972) 388-3669! At Tom's Mechanical, Inc., we always deliver the top-notch customer service you are seeking.