When should I call a pro about a new smell?« Back to Previous Page

A new, persistent smell often indicates an issue with your building's systems. In Dubai's climate, with high humidity and year-round AC use, the most common sources are microbial growth in AC units, stagnant water in drain pans, or dust accumulation in ducts.

First, try to identify the smell's character. A musty, earthy odor typically points to mould or mildew in your AC system, often in the evaporator coils or drip pan. A foul, sewage-like smell could indicate a dry drain trap in an AC unit or bathroom, allowing sewer gases to enter. A burning smell requires immediate attention as it may signal an electrical issue.

Check if the smell is isolated to one room or widespread. If it's only near an AC vent, the issue is likely local to that unit. If it's throughout the home, the main AC unit or ductwork could be the source. For a musty smell, check if it worsens when the AC turns on, which confirms the system is distributing the contaminant.

You should call a professional if the smell persists for more than 48 hours, intensifies with AC operation, or is accompanied by physical symptoms like headaches, congestion, or respiratory irritation. Any burning odor warrants an immediate call to a certified HVAC technician. For suspected microbial issues, a professional inspection with proper diagnostics, including potential lab analysis of swab samples, can identify the exact species and source, which is crucial for effective remediation. This is particularly important for villas with water tanks, where cleaning and disinfection schedules should be strictly followed as per Dubai Municipality guidelines.