Could AC mold cause my husband's sinus issues?« Back to Previous Page

Yes, AC mold can absolutely be the cause of your husband's persistent sinus issues. The black speckles you see are a significant visual indicator of a mold colony, and the continuous leakage from the unit provides the constant moisture mold needs to thrive. In Dubai's climate, where we rely on AC year-round, these damp, dark environments are a perfect breeding ground.

The most common types of mold found in AC systems, like Cladosporium and Aspergillus, are known irritants. They release spores and microbial volatile organic compounds (mVOCs) directly into the air you breathe. For sensitive individuals, this constant exposure often manifests as chronic sinus congestion, a nagging cough, sore throat, and allergy-like symptoms that persist as long as the exposure continues. His symptoms aligning with the discovery of the leak and visible growth is a strong correlation.

You should address this promptly. For a situation with both visible growth and health symptoms, a professional inspection is strongly advised. DIY cleaning of visible spots on the vent won't address the reservoir of mold likely growing inside the ductwork or on the cooling coils themselves. A proper remediation involves identifying the moisture source (fixing the leak), containing the area to prevent spore spread during cleaning, and using HEPA vacuuming and antimicrobial treatments on the entire affected system.

Following remediation, a post-testing verification is the only way to confirm the allergen load in your air has been successfully reduced to a level that should allow his symptoms to subside.