Mould in Air Ducts: Facts, Signs and How to Deal With It

Mould growth inside AC ducts is one of the most common hidden problems in Dubai homes. With high humidity, frequent AC use, and dust build-up, ducts create the perfect breeding ground for mould. Left untreated, it not only affects your AC’s performance but also your health and indoor air quality.

1. How Does Mould Form in Air Ducts?

Mould thrives in damp, dark environments. Inside AC ducts, condensation and trapped moisture provide the ideal conditions. If filters, coils, or drain pans are dirty, moisture combines with dust to create a food source for mould spores. Over time, colonies spread through the ductwork and into your living space.

2. Why Mould in Ducts Is a Serious Problem

• Health Risks: Exposure can trigger allergies, asthma, headaches, and respiratory issues.
• Indoor Air Quality: Mould spores circulate each time the AC runs, spreading contamination throughout your home.
• System Efficiency: Heavy mould buildup can restrict airflow, making your AC less effective and increasing energy costs.
• Property Damage: Mould growth on walls, ceilings, and vents can cause stains and unpleasant odours.

3. Signs of Mould in Your Air Ducts

• Musty or damp smells when the AC is running
• Visible dark spots around vents or diffusers
• Frequent allergy or breathing issues indoors
• Unexplained dust and dirt build-up despite regular cleaning
• Condensation or moisture near vents

4. How to Deal with Mould in AC Ducts

• Professional Duct Cleaning: DIY cleaning only addresses surface mould. A full professional duct cleaning removes spores, dust, and moisture buildup.
• Coil and Filter Cleaning: Mould often starts on dirty coils or clogged filters before spreading into ducts.
• Moisture Control: Checking and clearing condensate drain lines helps stop mould from returning.
• Regular Maintenance: Servicing your AC at least once a year keeps the system clean, dry, and mould-free.

The Pro Clean AC Approach

At Pro Clean AC, we specialise in identifying and eliminating mould from air conditioning systems. Our British-trained technicians use professional cleaning techniques to remove mould from ducts, coils, and filters—restoring clean, fresh airflow in your home. We also check for underlying causes, such as poor drainage or high humidity, to stop mould coming back.

Protect Your Health and Home

Mould in ducts is more than an inconvenience—it’s a health hazard that needs urgent attention. With proper cleaning and preventative care, you can ensure your AC system provides safe, clean, and efficient cooling.

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