How to Safely Clean and Maintain Your Air Conditioner

March 6, 2025

Breathe Easy: The Secret to a Clean and Efficient Air Conditioner

Few things feel as refreshing as stepping into a cool home after a scorching day. But if your air conditioner is struggling to keep up or smells a little funky, it might be crying out for a good clean. A grubby unit doesn’t just affect performance; it can send your energy bills skyrocketing and even pump dust and allergens into the air.

Good news—it’s easier to freshen things up than you might think! Let’s walk through the best way to clean and maintain your air conditioner so you can enjoy fresh, chilled air all year round.

Why Regular Cleaning Matters

A neglected air conditioner can become a breeding ground for dust, mould, and bacteria. Filters clog, airflow weakens, and efficiency drops. Over time, your system works harder, gobbling up electricity and wearing out faster.

By giving it a little TLC, you'll not only improve performance but also extend its lifespan. Plus, you’ll keep the air in your home crisp and clean—no one wants to breathe in last season’s dust bunnies!

Step-by-Step Guide to Cleaning Your Air Conditioner

1. Turn It Off and Stay Safe

Before starting, switch off the power at the main switch or isolation switch. You don’t want any nasty surprises while you're working on the unit.

2. Clean or Replace the Filters

The filters are the air conditioner’s first defence against dust and debris. Over time, they can become clogged, reducing efficiency and air quality.

Remove the filters and check for dirt buildup.
If they're washable, rinse them under warm water and let them dry completely before reinstalling.
If they’re disposable, replace them with a new set.

Try to do this at least once a month in peak summer and winter months when the unit is working hardest.

3. Wipe Down the Vents and Exterior

Dust and grime love to settle around the vents. Use a damp cloth to wipe them down. If there's stubborn dirt, a mild detergent can help.

4. Give the Coils Some Attention

The evaporator and condenser coils can get covered in dust and reduce heat exchange efficiency. Use a soft brush or vacuum with a brush attachment to gently remove any buildup.

5. Check the Drainage

Blocked drains can lead to moisture buildup and mould growth. If you notice any water pooling around the unit, clear the drain line with a small brush or flush it with a mix of vinegar and water.

6. Clean the Outdoor Unit

If you have an outdoor unit, keep it free of leaves, dirt, and debris. Trim any plants or shrubs nearby to allow proper airflow.

7. Run a Test

Once everything is clean and put back in place, switch the unit on and check that it’s running smoothly. Listen for any rattling, weak airflow, or strange smells.

Keeping Your Air Conditioner in Top Shape

Regular maintenance doesn’t stop at cleaning! Keep these tips in mind:

Schedule professional servicing at least once a year to catch any hidden issues.
Keep an eye on your thermostat and avoid setting it too low—this prevents unnecessary strain on the unit.
Ensure good airflow by arranging furniture so vents aren’t blocked.

Time to Grab Your Cleaning Gear!

Looking for the best tools and cleaning supplies to keep your air conditioner in tip-top shape? Pop into Strathalbyn H Hardware—we’ve got what you need and the expert advice to go with it!

Need help or have a question? Our friendly team is ready to chat. A well-maintained air conditioner makes all the difference, so why not give yours a little love today?

Stay cool and happy DIYing!

Candeece