AC chemical smell and sore throat: refrigerant leak?« Back to Previous Page

A refrigerant leak is one possibility, but not the most common cause for a chemical smell. In Dubai's climate, with year-round AC use, a leak would typically cause a sweet, ether-like odour and a noticeable drop in cooling efficiency. Your sore throat and headache are significant, as they point to direct irritation from inhaled contaminants.

More likely culprits are volatile organic compounds (VOCs) off-gassing from new building materials, cleaning products, or even new furniture, which are then circulated by the AC. Dust burning off the AC's heating element (if used) or chemical residues from a recent duct cleaning can also produce these smells.

For immediate action, increase ventilation in the room by opening windows when outdoor air quality permits, typically early morning or late evening. Check if the smell is strongest immediately after the AC starts; this often indicates an issue within the indoor unit itself.

Given your symptoms and that filter changes didn't help, a professional inspection is strongly advised to rule out a refrigerant leak or microbial growth. Technicians can use tools to detect refrigerant levels and inspect the evaporator coil and drip pan for mould or stagnation, which is a frequent issue in our high humidity. Dubai Municipality has clear guidelines on refrigerant handling and indoor air quality standards that qualified technicians follow. A proper assessment will identify the source and recommend targeted remediation, which is essential for resolving health-related symptoms.