How To Maintain An Air Conditioning Unit During Winter

A snow-covered air conditioning unit sits idle outside a brick house during heavy winter snowfall — a reminder of the importance to maintain an AC during winter for homes in regions like the Gold Coast.

Winter is a great time to give your air conditioner a bit of extra care. With these simple steps, you can learn how to maintain an AC during winter, especially for those who care about air conditioning Gold Coast.

I. 10 things to do when you want to maintain air conditioning Gold Coast in winter

1. Turn off the power completely

First, go to your electrical switchboard and turn off the circuit that powers your AC to prevent the system from turning on by accident during warm winter afternoons. Moisture from rain or morning dew can damage internal parts if the unit runs when it’s not fully dry.

2. Clear away leaves and outdoor debris

During autumn and winter, dry leaves, branches and even bird droppings can build up around your outdoor unit. Clean this area regularly about once every few weeks. This helps keep airflow smooth and reduces the risk of pests nesting inside the vents or blocking the fan.

3. Clean the interior unit

Use a soft cloth or duster to gently wipe the inside unit, especially the surface and vents. Dust can build up and get blown back into the room when you use the system again. Over time, it  might cause yellow stains or make your unit look older.

4. Replace or clean the air filter

This is one of the most important things to do. Dirty filters reduce airflow, strain the system and lower your indoor air quality. In winter, warm indoor air can cause moisture buildup, which increases bacteria or mold. 

5. Inspect the unit for visible damage

Take a few minutes to walk around and look at your outdoor unit. Do you see any cracked panels, rust or loose screws? A simple check now can help you catch small issues before they become expensive repairs later.

6. Insulate exposed pipes

If any pipes are outside, cover them with foam to protect from the cold. This prevents them from freezing or cracking and helps the system run better when heating.

7. Cover the outdoor unit (if it’s not a heat pump)

For standard systems that aren’t in use during winter, a waterproof cover can protect against moisture, dust and dirt. Choose a proper AC cover that allows air to circulate from underneath to prevent mold. If your system is a heat pump (used for both heating and cooling), do not cover as it needs airflow to work properly.

8. Update thermostat settings

Switch to heating mode or turn it off if you’re not using the system. If you have a smart thermostat, set it to match your winter routine to save energy and lower power bills.

9. Clean and check the drainage system

The drain line and tray can clog over time, especially after humid months. Clear out dirt, algae or blockages so water drains properly. This helps prevent leaks, musty smells and ice buildup in cold weather.

10. Book a professional service

Even if everything seems fine, a yearly service can catch hidden issues. A technician will check gas levels, clean internal components, test the thermostat and make sure everything is running smoothly. 

Modern air conditioning unit surrounded by light snow in early morning sunlight outside a home, showing how to maintain an AC during winter for consistent performance — even in milder Gold Coast winters.

II. Why do you need to choose DEEPCHILL’s air conditioning Gold Coast maintenance service in winter?

DEEPCHILL, your trusted air conditioning Gold Coast service, has years of experience in keeping AC systems running at their best. From cleaning and filter replacement to full system check-ups, we know what your unit needs to stay in top conditions. Contact us today for cost-effective, reliable solutions that help maintain an AC during winter run smoothly!