How often should AC ducts be professionally cleaned?« Back to Previous Page

In Dubai's climate, with year-round AC use, high humidity, and constant dust infiltration, duct cleaning every two to three years is a solid baseline for a villa. If your family includes allergy sufferers, infants, or you notice visible dust buildup at the vents, increasing that frequency to annually is advisable.

What you described—heavy dust caked behind the vent cover—is a clear sign the system needs attention. You can perform a simple check yourself. Remove a few vent covers and use your phone's flashlight to look several feet into the ductwork. Look for layers of dust, any visible debris, or signs of moisture and microbial growth. If the dust is thick enough to wipe your finger through, it's likely circulating into your room.

For the coughing you're noticing, especially in the evenings when the system runs consistently, contaminated ducts are a common culprit. The dust often contains a mix of fine sand, pollen, and other particulates that irritate airways. In our humid environment, this dust can also trap moisture and become a substrate for mould growth, which would further aggravate respiratory symptoms.

While a visual check is a good first step, a professional inspection with a borescope camera is needed to assess the entire system, including the evaporator coil and drain pan, which are common sources of microbial issues. The Dubai Municipality has guidelines on indoor air quality, and a reputable provider should be able to show you before-and-after data from the cleaning to verify the results. Given your children's symptoms, a professional assessment is strongly recommended to identify the specific irritants present.