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Air Conditioner Basics: Top 5 causes of AC problems.

Air conditioners are essential appliances that help regulate the temperature and humidity levels in our homes or workplaces. They are especially important during the hot summer months, as they keep us cool and comfortable. However, like any other appliance, air conditioners can experience problems.


Here are the top 5 causes of AC problems:

  1. Dirty Air Filters: One of the most common causes of AC problems is dirty air filters. Air filters help to trap dust, dirt, and other particles, preventing them from entering the AC system. Over time, these filters can become clogged, restricting airflow and reducing the efficiency of the system. This can cause the AC to work harder, leading to higher energy bills and potential damage to the system.
  2. Refrigerant Leaks: Refrigerant is the substance that cools the air in your AC system. If there is a leak in the refrigerant lines, the AC system will not function properly. Signs of a refrigerant leak include warm air blowing from the vents, ice buildup on the coils, and a hissing sound coming from the system.
  3. Faulty Thermostat: The thermostat is the control panel that regulates the temperature in your home or workplace. If the thermostat is faulty, it can cause the AC to turn on and off at the wrong times, leading to inefficient cooling and potential damage to the system.
  4. Dirty Coils: The evaporator and condenser coils are responsible for transferring heat in and out of the AC system. If these coils become dirty or clogged, they can reduce the efficiency of the system, causing it to work harder and potentially leading to system failure.
  5. Electrical Issues: Electrical problems, such as faulty wiring, can cause the AC system to malfunction or fail altogether. Signs of Electrical Issues include tripped breakers, blown fuses, or the system not turning on at all.


Air conditioners can experience a variety of problems that can impact their efficiency and lifespan. By understanding the top 5 causes of AC problems, you can take steps to prevent them from occurring and keep your AC system running smoothly. Regular maintenance, such as changing air filters and cleaning coils, can also help prevent these issues from arising.


ASP provides Air Conditioning Installation Service and  maintenance services. Annual AC system maintenance will identify small issues before they lead to major mechanical breakdowns of major system components, ensure the air conditioning system indoor and outdoor coils are clean, condensate drains are flushed and cleaned, and ensure the whole system is working at peak performance.

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