Breathe Easy – Know the Signs Before It Affects Your Health

At Logan Aircon and Electrical, we’re not just about keeping you cool, we’re committed to keeping your indoor air clean and safe. One of the biggest hidden threats in air conditioning systems is mould. It thrives in dark, moist environments, making your split system or ducted aircon unit the perfect home if regular maintenance isn’t done.

Left untreated, mould can cause musty smells, poor air quality, and even serious health issues, particularly for people with allergies, asthma, or weakened immune systems.

Here’s what to look out for:

Common Signs of Mould in Air Conditioning Systems

1. Unusual Musty Odours

If a strong, damp, or musty smell hits you every time the unit is turned on, there’s a good chance mould is growing inside. This smell is often strongest near the indoor unit or vents.

2. Visible Black or Grey Spots

Check the vents, filters, and coils. Black, grey, or green patches can be mould colonies. In split systems, you might see it behind the front panel. In ducted systems, look near the vents or inside the return air grille.

3. Excess Moisture or Condensation

Water that isn’t draining properly can create the perfect breeding ground for mould. If you see moisture around the indoor unit or ducts, that’s a red flag.

4. Unexplained Allergy Symptoms

Runny nose, itchy eyes, sneezing, or tight chest when the aircon is running? It could be a reaction to airborne mould spores circulating through your system.

5. Black Dust Around Vents

This could be mould spore residue, not just regular dust. If you wipe it and it quickly returns, it’s time for a deeper inspection.

Mould in Split Systems vs Ducted Aircons

• Split Systems: Mould commonly forms on the evaporator coils, filters, and behind the louvre blades. These areas are often damp and dark, making them ideal for mould growth.
• Ducted Systems: Mould can spread through the ductwork, especially if the system is poorly ventilated or the filters haven’t been changed regularly. Because ducted systems cover multiple rooms, this can quickly affect your entire home or office.

What to Do if You Suspect Mould

If you notice any of these signs, it’s important to act quickly. At Logan Aircon & Electrical, we offer professional aircon cleaning and mould treatment services to remove mould safely and prevent it from returning.

Our team can:

Inspect and clean split system and ducted units
Remove and treat mould from internal components
Clean or replace filters and drain lines
Improve airflow and drainage to reduce future growth

Prevention is Better Than Cure

To avoid mould buildup:

• Book regular servicing (at least once per year)
• Clean filters monthly (especially in humid months)
• Ensure your unit drains properly and isn’t leaking
• Keep humidity in check with proper ventilation or dehumidifiers

Need Help? Call the Local Experts

If you’re in Logan or surrounding areas and suspect mould in your aircon unit, don’t wait. Breathe easy again with a professional clean from the team you can trust.