When you spot a leak in your home, you might think that it’s coming from a hole in the roof or a problematic pipe. Some isolated leaks, however, might be the fault of your HVAC unit. If you’ve found water pooling near your climate control system, here are a few potential causes to consider, along with information about how professional air conditioning repair can help dry things up.

What Causes Air Conditioners to Leak? 

1. Frozen Evaporator Coils

When pressure drops inside an AC unit, the evaporator coils within the it can freeze over. The water from melting ice will contribute to drainage overflow.

The pressure sometimes drops when airflow is restricted. Low airflow is usually the result of a clogged air filter. You may be able to resolve the issue by replacing the filter and continuing to change it again every 60 to 90 days.

Low refrigerant levels may be another source of pressure problems. Call an air conditioning repair company to seal leaks in the line and recharge the system with more refrigerant.  

2. Lower Temperatures 

If the leaks appear during the fall season, you’ve likely let your HVAC unit run on cooling mode for too long. When the outdoor temperature drops below 60 degrees, the coils inside AC equipment can get too cold and freeze. Eventually, the ice melts, resulting in leakage. You can avoid this problem by shutting off your system when the weather cools.

3. Drainage Issues

An AC unit produces cool air and moisture—a result of evaporation of incoming hot air. In a properly functioning system, this moisture collects in the condensate drain line and is directed to a drain pan.

When you spot a puddle near an indoor unit, it’s likely that the drain pan is full and needs to be emptied. If the pan is cracked, have it replaced.

If your pan is intact, water is probably spilling out of interrupted drain line tubes. First, make sure all tubes are fully attached and connected. Next, look for clogs in the tubes. If you spot one, try using a shop vacuum to gently suck the blockage out, or hire an air conditioning repair specialist to clear the clog for you.

 

Although a leaking air conditioner is usually not an emergency, it’s a sign that your HVAC system needs attention. Illy HVAC of St. Peters, MO, is equipped to provide quick and thorough inspections. With more than 30 years of experience, this contractor confidently services home HVAC system, performing both minor maintenance and major air conditioning repairs. To learn more about their affordable and dependable services, visit them online. For assistance anywhere in the St. Louis area, call (314) 808-2162 to speak with a friendly professional.