As temperatures across Dubai begin to climb, residents are closing their windows shut, thermostats down, and AC units running around the clock. Many also begin noticing early indoor discomforts during this period such as occasional sneezing, stuffy air, or rooms that feel less fresh than usual, often attributed to dust or seasonal changes. Yet, one of the most commonly overlooked areas of home care remains the AC system itself.
Even when a space looks clean on the surface, hidden buildup inside AC systems can affect airflow, cooling efficiency, and the quality of air circulating indoors. Local facility management and AC companies indicate that mold in AC systems is common, with approximately up to 30% of homes showing some form of buildup.
In Dubai, summer temperatures regularly exceed 40°C with humidity levels sitting between 50% and 70%. These conditions make AC systems particularly vulnerable to mold development, often long before any visible signs or unusual odours appear. In the summer of 2024, Dubai-based AC and facility management firms reported a 70% surge in resident inquiries related to mold buildup, reflecting the scale of the issue during peak season[1].
The buildup is typically driven by a combination of heat, humidity, dust, and trapped moisture inside the unit. Over time, untreated ducts, filters, coils, and drain pans collect contaminants that force the system to work harder, resulting in weaker cooling, reduced airflow, and higher electricity bills.
Dubai Municipalityrecognises HVAC systems as a potential source of indoor air contaminants, including microbiological growth in drip pans, ductwork, coils, and drain components. Beyond mold, poorly maintained AC units may also be less effective at filtering bacteria, dust particles, and other indoor pollutants.
For residents who already experience sensitivity to allergens or respiratory irritation, the quality of indoor air during Dubai’s summer months is worth paying close attention to. Mold and dust accumulation inside AC systems can contribute to discomfort that is easy to dismiss until it becomes harder to ignore.
Dr. Saira Hyder, Medical Director at Justlife, noted: “Regular AC maintenance is one of the most practical steps Dubai residents can take heading into summer. Most people don’t act until they notice a smell or a drop in cooling performance, and by that point, the buildup has already been there for some time. Cleaning ducts and filters early makes a meaningful difference to both air quality and system efficiency.”
What Dubai Residents Can Do Now
Recommended AC cleaning frequency in the UAE can differ by provider, but generally includes a full coil, duct, and filter cleaning once every 12 months, ideally at the start of summer. Filter cleaning is recommended every 3 months, while duct and filter cleaning is recommended every 6 months, particularly during mid-summer.
Residents can also help reduce buildup by avoiding turning the AC off for long periods during humid months, keeping the AC between 26°C and 28°C in fan or auto mode, checking filters monthly during peak usage, and fixing leaks or condensation issues promptly.
As Dubai’s summer continues to get warmer, AC maintenance is no longer a seasonal afterthought; it is a fundamental part of responsible home care in the city’s climate. Booking a professional cleaning from a reliable service provider like Justlife before temperatures peak is one of the simplest ways to protect both your home’s comfort and the efficiency of the system keeping it cool.
