Who is responsible for musty AC smell in rental villa?« Back to Previous Page

Excellent question, and a very common issue we see here in Dubai, especially in areas like Mirdif as the summer humidity intensifies.

The responsibility for the AC unit's maintenance and repair typically falls on the landlord, as per standard Dubai rental law (RERA regulations). The AC is considered a central part of the property's provision of a habitable environment. If the musty odor is determined to be originating from the AC system itself—specifically the internal unit, ductwork, or drain pan—due to a lack of maintenance, microbial growth, or a clogged condensate line, the landlord is generally obligated to address it. This includes the cost of a professional hygienization service.

However, your first step is to formally notify your landlord or property management company in writing about the issue. They will likely dispatch their own maintenance team for an initial assessment.

A word of caution: a musty smell, particularly post-AC activation, is a primary indicator of microbial amplification (mold/bacteria) within the system. This is not just an odor issue; it's an Indoor Air Quality (IAQ) concern. Spores and microbial volatile organic compounds (mVOCs) are being aerosolized directly into your children's breathing zone.

Standard maintenance often involves just cleaning the filters and maybe the evaporator coils, which is insufficient for a microbial infestation. Ductwork, insulation, and drain pans require specialized assessment and remediation techniques.

I strongly recommend insisting on, or independently arranging for, a professional IAQ inspection. Our team uses borescopes to inspect deep within ducts and air sampling to identify contaminant types and concentrations. This provides concrete evidence of the problem's scope. If the landlord's solution is inadequate, this report strengthens your case for a proper remediation.

For a definitive diagnosis and to ensure your family's health, please feel free to call our experts at 800-MOLDS or email hello@saniservice.com for a consultation. We can provide the documentation you need to present to your landlord.