Icy evaporator and condenser coils are among the most common causes of AC repairs and service calls during the cooling season in Sulphur, LA. Even if it’s 90 degrees outside, your air conditioner can turn into a solid block of ice. Here’s what you should know about this nature-defying phenomenon.
1. Low Refrigerant Levels or Leaks
Improper refrigerant levels and leaks create pressure imbalances that reduce the system’s operating temperature and disrupt the cooling cycle. In this situation, frost typically develops on the evaporator coils and incoming refrigerant lines. Your AC repair technician can measure the operating pressure, repair leaks and recharge the system if needed.
2. Clogged Filters, Restricted Airflow and Mechanical Failures
Clogged filters cause big problems. When incoming airflow is restricted, the coils may not absorb enough heat to prevent frost buildup and ice accumulations. Similar problems occur due to ductwork obstructions or faulty fans. If you’re having trouble with icy coils, try replacing the HVAC filter before calling your air conditioning repair company.
3. Dirty Evaporator or Condenser Coils
Dirty indoor or outdoor coils produce similar symptoms by restricting the airflow and heat transfer rates. For best results, hose off the outdoor unit at least once per season to remove pollen, grass clippings and debris. If the evaporator coils need to be cleaned, ask your HVAC contractor for assistance. These maintenance tasks are also included in our preseason tune-ups and annual service agreements.
What to Do If Your Air Conditioner Freezes
If you notice visible ice buildup on the evaporator or condenser coils, turn the unit off at the thermostat. Then, switch on the central HVAC fan, and select the on setting rather than the auto option. This will help melt the ice faster so that your AC repair company can accurately diagnose the problem. To schedule an air conditioning repair or to find out why your air conditioner is freezing up, get in touch with our team today.