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Common Causes of AC Failure: Understanding the Basics

As a homeowner, experiencing an air conditioner failure can be frustrating and inconvenient, especially during the hot summer months in Memphis. Knowing the common causes of AC failure and understanding the basics of HVAC maintenance can help you prevent these issues and keep your home cool and comfortable. In this blog post, we will discuss the top 5 common causes of AC failure and provide tips on how to prevent them.

1. Dirty or Clogged Filters

One of the most common causes of AC failure is dirty or clogged air filters. When your air filter becomes dirty, it restricts airflow to your system, causing it to work harder and less efficiently. This can lead to increased energy bills, decreased cooling capacity, and even system failure. To prevent this issue:

  • Check your air filters regularly and replace them as needed. We recommend changing your filters at least every three months.
  • Consider upgrading to a high-efficiency air filter, which can help improve your system's performance and reduce the risk of AC failure.

2. Refrigerant Leaks

Refrigerant is a vital component of your air conditioning system, as it helps absorb heat from your home and release it outside. Leaks in your refrigerant lines can lead to decreased cooling capacity and even system failure. To prevent refrigerant leaks:

  • Have your HVAC system inspected and serviced regularly by a professional technician. They can check for leaks and repair them before they become a major issue.
  • Be aware of the signs of a refrigerant leak, such as a hissing noise, ice buildup on your evaporator coil, or decreased cooling capacity.

3. Electrical Issues

Electrical issues can cause your air conditioner to malfunction or fail completely. Common electrical problems include faulty wiring, tripped breakers, and blown fuses. To prevent electrical issues:

  • Have your HVAC system inspected and serviced regularly by a professional technician. They can check for any electrical issues and make necessary repairs.
  • Be aware of the signs of an electrical problem, such as flickering lights, burning smells, or your AC system turning on and off repeatedly.

4. Frozen Evaporator Coil

The evaporator coil in your air conditioner is responsible for absorbing heat from your home's air. If the coil becomes frozen, it can't effectively absorb heat, leading to decreased cooling capacity and potential system failure. To prevent a frozen evaporator coil:

  • Check your air filters regularly and replace them as needed to ensure proper airflow.
  • Keep your thermostat set at a reasonable temperature. Setting it too low can cause your evaporator coil to freeze.
  • Have your HVAC system inspected and serviced regularly by a professional technician. They can check for any issues with your evaporator coil and make necessary repairs.

5. Lack of Maintenance

Regular maintenance is crucial for keeping your air conditioning system running smoothly and efficiently. Neglecting maintenance can lead to a variety of issues, including AC failure. To prevent this:

  • Schedule regular tune-ups with a professional HVAC technician. Annual maintenance can help improve your system's efficiency and prevent costly repairs.
  • Perform basic maintenance tasks yourself, such as cleaning your outdoor unit and checking your air filters.

By understanding these common causes of AC failure and taking steps to prevent them, you can help ensure your air conditioning system stays in top shape all summer long. If you need assistance with AC maintenance or repair in Memphis, trust the experts at AirMasters Air Conditioning & Heating. Our team of professional technicians is dedicated to providing top-quality service and ensuring your home stays cool and comfortable. Contact us today to schedule an appointment or learn more about our air conditioning services.