What Kind of Maintenance Does an Air Conditioner Need?

What Kind of Maintenance Does an Air Conditioner Need
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With the summer season fast approaching, ensuring that your air conditioning unit is functioning at its best is essential. Proper maintenance not only guarantees a comfortable indoor environment but also prolongs your team’s life, conserves energy, and saves you money in the long run. Additionally, regular upkeep ensures better indoor air quality, contributing to the overall health of your household. Let’s delve into the specific types of maintenance your air conditioner needs to keep it running smoothly.

Basic Terminology

Before we begin, let’s get acquainted with some basic terms and components related to air conditioning units:

  1. Compressor: This is the heart of the AC system and is responsible for circulating refrigerant.
  2. Condenser Coil: Situated in the outdoor unit, it facilitates heat transfer from the refrigerant to the outdoor air.
  3. Evaporator Coil: Found in the indoor unit, it absorbs heat from your home’s air, thus cooling it.
  4. Filters: These trap dust, pollen, and other particles to maintain clean airflow.
  5. Refrigerants: Chemical compounds that are used to transfer heat.

Understanding the cooling cycle, which involves these components working in harmony, is essential to grasp the importance of maintenance.

Routine Maintenance Activities

Cleaning/Replacing the Air Filter

A clean filter is vital for maintaining an uninterrupted and healthy airflow. Depending on the filter type used, cleaning or replacing them every one to three months is recommended. The process is generally straightforward:

  1. Turn off the AC system.
  2. Remove the filter carefully.
  3. Clean it with a mild detergent if it’s reusable, or replace it with a new one.
  4. Install the filter back in its place.

Cleaning the Condenser and Evaporator Coils

Dirty coils can significantly decrease your AC’s efficiency. Typically, these coils should be cleaned at least once a year. This process usually involves:

  1. Turning off the unit.
  2. Using a coil cleaner available at hardware stores.
  3. Gently scrub the coils following the instructions on the cleaner.
  4. Rinsing off the cleanser as directed.

Checking the Refrigerant Level

Maintaining the correct refrigerant level is critical for your AC’s operation. It might be a refrigerant issue if you notice symptoms such as reduced cooling or ice buildup. However, remember always to let licensed professionals handle refrigerant checks and refills.

Inspecting the Fins

The fins on the evaporator and condenser coils play a significant role in the cooling process. Ensure they are not bent or damaged, as this can restrict airflow. You can gently straighten bent fins using a fin comb, but avoid damaging the tubing embedded within the fins.

Cleaning the AC Drains

Drains play a vital role in removing condensation produced during the cooling process. A clogged drain can lead to water damage and reduced efficiency. To prevent this, ensure to clean the gutters regularly by:

  1. Locating the drain line.
  2. Use a wet-dry vacuum to remove any blockages.

Checking the Thermostat

An accurate and functioning thermostat is essential for achieving the desired indoor temperature. If your unit is old, consider upgrading to a programmable thermostat for better energy savings and precise temperature control.

Annual Professional Maintenance

Why It’s Necessary

While homeowners can carry out regular maintenance, specific tasks require the expertise of a professional. Annual check-ups by a technician ensure the optimal functioning of complex components and early detection of potential issues.

Common Professional Checks

During a professional service visit, you can expect technicians to perform tasks like:

  • Checking for refrigerant leaks.
  • Measuring refrigerant charge.
  • Inspecting electrical components and connections.
  • Matching belts for wear and tightness.
  • Oiling motors, if necessary.
  • Verifying the accuracy of the thermostat.

Benefits of Regular Maintenance

Investing time and resources in regular maintenance brings several benefits. It can lower your energy bills and reduce the risk of major breakdowns, extending the equipment’s lifespan. Additionally, it fosters improved indoor air quality, offering peace of mind knowing that your household is breathing clean, healthy air.


As highlighted, routine and professional maintenance is critical to enjoying a fully functional and efficient air conditioning system. Adopting a regular maintenance schedule for your AC unit will save you money and prevent unnecessary hassles in the future, making those hot summer days more bearable. Remember, a well-maintained air conditioner is a happy air conditioner!

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