Inverter Air Conditioner: How to Perform Maintenance

by Harold Achicanoy on Jun 26, 2024

Inverter Air Conditioner: How to Perform Maintenance

Inverter air conditioners are known for their energy efficiency and consistent cooling performance. However, like all HVAC systems, they require regular maintenance to ensure they continue to operate at their best. In this blog, we'll provide a comprehensive guide on how to perform maintenance on your inverter air conditioner to keep it running efficiently and prolong its lifespan.

Why Regular Maintenance is Important

Regular maintenance of your inverter air conditioner is crucial for several reasons:

  • Improved Efficiency: Regular cleaning and servicing ensure the unit operates at peak efficiency, reducing energy consumption and lowering electricity bills.
  • Extended Lifespan: Proper maintenance prevents wear and tear, extending the lifespan of your air conditioner.
  • Enhanced Air Quality: Clean filters and components improve indoor air quality by removing dust, allergens, and pollutants.
  • Prevention of Breakdowns: Routine checks help identify and fix minor issues before they lead to major breakdowns.

Step-by-Step Guide to Maintaining Your Inverter Air Conditioner

1. Turn Off the Power

Before performing any maintenance, ensure that the power to the air conditioner is turned off. This is crucial for your safety and to prevent any damage to the unit.

2. Clean or Replace the Air Filters

Air filters should be cleaned or replaced regularly to maintain airflow and improve air quality.

  • How to Clean: Remove the filters and wash them with mild detergent and warm water. Let them dry completely before reinserting them.
  • How Often: Clean every 1-2 months, and replace every 6-12 months, or as recommended by the manufacturer.

3. Inspect the Thermostat

Ensure the thermostat is functioning correctly and set to the desired temperature. If it’s a programmable thermostat, check the settings to ensure they are appropriate for your schedule.

4. Clean the Condenser Coils

Over time, dust and debris can accumulate on the condenser coils, reducing efficiency.

  • How to Clean: Use a soft brush or vacuum cleaner to gently remove dirt and debris from the coils. For a deeper clean, you can use a coil cleaner.
  • How Often: Clean at least once a year, preferably before the cooling season starts.

5. Check the Refrigerant Levels

Low refrigerant levels can affect cooling efficiency and may indicate a leak.

  • How to Check: This task is best left to a professional technician who can measure the refrigerant levels and recharge if necessary.
  • How Often: Annually or if you notice a decrease in cooling performance.

6. Inspect and Clean the Drain Line

A clogged drain line can cause water damage and reduce efficiency.

  • How to Clean: Use a wet/dry vacuum to remove any blockages from the drain line. You can also flush it with a mixture of bleach and water.
  • How Often: Every 6 months.

7. Clean the Outdoor Unit

The outdoor unit (condenser) should be free of debris and obstructions to ensure proper airflow.

  • How to Clean: Remove any leaves, dirt, or debris around the unit. Use a garden hose to gently wash the exterior.
  • How Often: Every few months, especially after a storm or heavy wind.

8. Inspect the Electrical Components

Check the wiring and connections for any signs of wear or damage.

  • How to Check: Look for frayed wires, loose connections, or burnt components. This is another task that may require a professional technician.
  • How Often: Annually.

When to Call a Professional

While many maintenance tasks can be done by homeowners, some require the expertise of a professional HVAC technician. Call a professional if:

  • You notice strange noises or smells coming from the unit.
  • The air conditioner isn’t cooling as effectively as it should.
  • There are visible signs of damage or wear on electrical components.
  • You suspect a refrigerant leak.


Regular maintenance of your inverter air conditioner is essential to ensure its efficiency, longevity, and performance. By following these simple steps, you can keep your unit running smoothly and avoid costly repairs. For more complex tasks or if you’re unsure about any aspect of the maintenance, don’t hesitate to contact a professional HVAC technician.

At CTS AC Supply, we offer a range of high-quality inverter air conditioners and professional maintenance services to keep your system in top condition. Contact us at 813.409.0694 or visit our website at for more information.

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