How to Clean Your Air Conditioning Unit

When the scorching heat of summer is in full swing, there’s nothing more refreshing than stepping into a cool, air-conditioned room. But to ensure your AC unit continues to function optimally and provides clean, healthy air, regular maintenance and air conditioning cleaning Brisbane are essential. In this guide, we will take you through the step-by-step process of cleaning your air conditioning unit, ensuring it stays efficient, prolongs its lifespan, and maintains good indoor air quality.

aircondition cleaning

Why Clean Your Air Conditioning Unit?

Before we dive into the cleaning process, it’s crucial to understand why cleaning your AC unit is so important.

1. Improved Efficiency

A clean AC unit operates more efficiently. When dust and debris accumulate on its components, it has to work harder to cool the air, leading to increased energy consumption and higher utility bills.

2. Better Air Quality

Dirty air conditioning units can circulate allergens and contaminants, leading to respiratory problems and allergies. Regular cleaning helps maintain the air quality in your home.

3. Prolonged Lifespan

Proper maintenance and cleaning can extend the lifespan of your AC unit, saving you money on costly replacements.

Getting Started: Tools and Safety Precautions

Before you start cleaning your air conditioning unit, gather the necessary tools and take some safety precautions.

Tools You’ll Need

  • Screwdriver
  • Hose with a spray nozzle
  • Vacuum cleaner with a brush attachment
  • Fin comb
  • Mild detergent
  • Bucket
  • Gloves and safety goggles

Safety Precautions

  1. Turn off the power to the AC unit to avoid any electrical mishaps.
  2. Wait for the unit to cool down if it has been running recently.
  3. Ensure proper ventilation in the area where you’ll be working.
  4. Use protective gear, including gloves and safety goggles.

Step-by-Step Cleaning Guide

Now, let’s walk through the cleaning process step by step.

Step 1: Remove the Outer Cover

Start by turning off the power to the AC unit. Use a screwdriver to remove the outer cover. Be gentle to avoid damaging the fragile fins inside.

Step 2: Clean the Fins

Use a fin comb to straighten any bent fins. Then, use a vacuum cleaner with a brush attachment to carefully clean away dust and debris from the fins.

Step 3: Clean the Evaporator Coil

Mix a mild detergent with water in a bucket. Dip a cloth or sponge in the solution and gently clean the evaporator coil. Be cautious not to damage the coil. Rinse with clean water.

Step 4: Clean or Replace the Air Filter

Remove the air filter and clean it if it’s reusable. If not, replace it with a new one. A clean filter ensures proper airflow and air quality.

Step 5: Clean the Drain Pan and Drain Line

Inspect the drain pan and drain line for blockages. If you find any, use a mixture of water and mild detergent to clean them. A clogged drain line can cause water damage and mold growth.

Step 6: Reassemble and Test

After cleaning all the components, reassemble the unit, and turn the power back on. Test the AC to ensure it’s working correctly and efficiently.


Cleaning your air conditioning unit is a simple yet crucial task that can significantly impact your comfort and indoor air quality. By following these steps and performing regular maintenance, you can enjoy cool, clean air all summer long and extend the life of your AC unit.


1. How often should I clean my air conditioning unit?

It’s recommended to clean your AC unit at least once a year, preferably before the start of the cooling season.

2. Can I use any detergent for cleaning the evaporator coil?

It’s best to use a mild detergent or a coil cleaning solution specifically designed for air conditioning units.

3. What should I do if I notice ice forming on my AC unit?

If you see ice, turn off the AC immediately and let it thaw. Ice formation could indicate issues with airflow or refrigerant levels, which require professional attention.

4. Can I clean the air filter with just water?

For best results, clean the filter with a mixture of water and mild detergent. It helps remove trapped particles more effectively.

5. Is it necessary to hire a professional for AC cleaning?

While basic maintenance can be done by homeowners, it’s a good idea to have a professional HVAC technician perform a thorough inspection and cleaning annually to ensure optimal performance and safety.