Every two to three years in a typical Dubai home, sooner after construction work, a water leak, or if there is a smell at start-up.
Duct cleaning intervals sold as a fixed number are guesswork. What actually decides it is how much the system runs, what the filters have been catching, whether the property has been through building work, and whether anything has ever been wet.
In a sealed, air-conditioned Dubai home the system moves the entire air volume through the same path many times a day, all year. That is why intervals here are shorter than the manufacturer literature written for temperate climates suggests.
What to check
- Every two to three years for an ordinary family home with filters kept clean
- Within months of any construction, renovation or fit-out work in the property
- Immediately after a water leak anywhere in the system or the ceiling void
- Sooner where there are allergy or asthma sufferers in the household
- Sooner again for short-let properties with continuous occupancy changes
Asked about this
A musty smell at start-up, visible dust on the grille louvres, or dust marks on the ceiling around the diffuser. Any of the three is worth an inspection.
Clean filters slow duct fouling but do not reverse it. Once material is in the run, it needs mechanical removal.
Mechanical agitation along the full run under negative pressure with HEPA collection, plus the coil, blower and condensate tray, documented with photographs.
Related reading
How Often AC Ducts Need Cleaning in Dubai, community by community
Each page covers the building stock there, the local condition that changes the method, and how a crew gets in.