Mould grows in hidden places you never see. Inside your AC's evaporator coils, drain pan, and blower chamber, mould thrives in dark, damp environments. By the time you see visible mould, the problem is severe. Most AC mould is hidden behind the front cover and spreading through your home's air.

The filter is just the first line of defense. While filters catch some particles, they don't stop mould from growing on the wet evaporator coils, condensate drain, or blower fan. These parts need professional cleaning with specialized equipment and anti-bacterial treatments. A clean filter with a mouldy coil is like having a clean doormat in a dirty house.

Mould can start growing within weeks. Age doesn't matter — moisture does. If your AC runs in a humid environment, condensation creates the perfect breeding ground for mould. We've found significant mould growth in AC units that are less than 6 months old. New doesn't mean clean.

Actually, running your AC spreads mould spores. When you turn on your AC with mould inside, the airflow blasts those spores throughout your entire home. Every room becomes contaminated. High speed just means faster distribution. Only professional cleaning and sanitization can eliminate the mould.

Even "a little" mould produces millions of spores. These spores trigger allergies, asthma attacks, respiratory infections, and long-term health issues. Children, elderly, and people with compromised immune systems are especially vulnerable. There's no "safe" amount of mould to breathe in your home.

DIY cleaning rarely reaches the actual problem areas. AC units require complete disassembly to access the coils, drain pan, and blower. Spraying the outside or filter won't touch the mould growing deep inside. Plus, improper cleaning can damage delicate components or spread contamination. Professional equipment and anti-bacterial treatments are essential for effective mould removal.