Can dirty AC coils cause a month-long cough?« Back to Previous Page

Yes, dirty AC coils can absolutely cause persistent respiratory symptoms like a month-long cough and runny nose. In Dubai's climate, with year-round AC use, contaminants on the coils are constantly aerosolized and circulated. The black grime you see is a mixture of fine desert dust, moisture, and microbial growth, which is a potent irritant to the respiratory tract, especially for children.

The high humidity here creates a perfect environment for mould and bacteria to thrive on the damp coils. When the AC operates, it blows these particles and microbial metabolites throughout your home. This exposure, particularly during sleep in an enclosed bedroom, can lead to chronic irritation, allergic reactions, and exacerbate conditions like asthma. Symptoms can develop within weeks of a significant buildup.

For your villa in Arabian Ranches, a professional inspection and cleaning is strongly recommended. The process involves specialized chemicals to dissolve the biofilm and disinfect the coils, not just a surface wipe. Afterwards, consider an indoor air quality diagnostic to identify specific allergens. To maintain it, ensure your AC's filter is changed every 3 months due to our dusty environment and that the drain line is flowing freely to prevent moisture accumulation.