If you’ve recently noticed a musty smell when your air conditioner turns on, or if you’ve spotted dark patches or fuzzy buildup inside the unit, there’s a good chance you’re dealing with mould.

And in Perth’s warm, often humid climate, mould inside your A/C unit can develop quickly — especially if your system hasn’t been cleaned in a while.

Here’s what you need to know, and what to do next to protect your home and health.

Why Mould in Your A/C Is a Problem

Mould inside your A/C unit isn’t just a maintenance issue — it’s a health risk.

As your air conditioner runs, it can blow microscopic mould spores into your home’s air. Over time, this can trigger:

Allergy or asthma flare-ups
Sinus irritation or respiratory issues
Headaches, fatigue, or tightness in the chest
Unpleasant odours in your home

The worst part? Mould can start growing in as little as 48 hours in the right conditions — especially inside damp, dark spaces like A/C coils, filters, and drain pans.

What Is a De-Mould Clean — and Why Do You Need One?

A standard A/C service may cover surface-level cleaning and a basic check of your system’s function. But it won’t go deep enough to fully eliminate mould — or stop it from coming back.

That’s where a professional de-mould clean comes in.

When you book a de-mould clean with a licensed Perth air conditioning technician, here’s what you’re getting:

✅ Full removal and sanitisation of filters
✅ Antimicrobial cleaning of coils, vents, and internal components
✅ Thorough treatment of drain lines, which often trap stagnant water
✅ Safe removal of visible and hidden mould growth
✅ Recommendations for how to prevent future build-up

This service helps restore safe, clean airflow throughout your home — and improves your A/C system’s efficiency at the same time.

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How Often Should You De-Mould Your A/C?

We recommend a de-mould clean every 12–18 months, especially if:

You run your A/C daily
You’ve had mould problems before
You or someone in your household has asthma or allergies
You live in a humid area or near the coast

Regular servicing and deep cleaning by a qualified Perth electrician can dramatically improve indoor air quality and extend the life of your A/C system.

Not Sure if Your A/C Has Mould?

We’re offering free A/C inspection reports this month.

Just send us a clear photo of the inside of your A/C unit, and one of our licensed air conditioning technicians will take a look and provide a no-obligation report.