From persistent headaches to respiratory issues, experts explain how indoor cooling systems affect your health and why maintenance is non-negotiable.
DUBAI — As temperatures soar across the Gulf, residents find their primary sanctuary indoors. The instant relief of a chilled room after enduring the punishing outdoor heat is a staple of UAE life. However, for many, this comfort comes at a hidden cost. Doctors across the Emirates are reporting a surge in “AC sickness,” a cluster of symptoms ranging from chronic headaches and dry throats to a more complex condition known as “Sick Building Syndrome.”
While air conditioning does not directly cause illness, medical experts warn that the environment it creates—characterized by dry air, poor ventilation, and neglected filters—can significantly impact the human body.
The Cumulative Toll of Artificial Cooling
The symptoms of excessive AC exposure often emerge gradually. What begins as a minor irritation can evolve into persistent fatigue and respiratory discomfort. Dr. Mohammed Harris, Consultant Pulmonologist at Medcare Hospital Sharjah, notes a consistent pattern among patients: nasal congestion, sneezing, dry eyes, and occasional muscle stiffness.
“The issue is rarely dramatic; it is cumulative,” Dr. Harris explains. “Dry, cooled air can irritate the lining of the nose and throat, causing discomfort or mild inflammation. In sensitive individuals, this may lead to coughing or worsening sinus congestion.”
This phenomenon is frequently linked to ‘Sick Building Syndrome’ (SBS). Common in office environments where air is recycled for hours, SBS manifests as dizziness, brain fog, and skin irritation. A 2023 study highlighted that individuals working in air-conditioned environments reported significantly higher rates of allergies and poorer lung function compared to those in non-AC settings.
Hidden Dangers: Mould, Bacteria, and Dehydration
The culprit is often not the temperature itself, but what is circulating within the system. Poorly maintained units act as reservoirs for dust, mould spores, and bacteria. Dinesh Ramachandran, Technical & SHE Manager at Rentokil Boecker, UAE, warns that a “sock-like” or mushy odour is often the first sign that an AC unit is contaminated.
Furthermore, air conditioners act as dehumidifiers. While this makes the heat bearable, it strips moisture from the skin and respiratory tract. “The dry air can make the airways feel more sensitive,” says Dr. Harris. This dehydration can lead to increased mucus production as the body attempts to protect itself, often resulting in a “blocked nose” that never quite clears.
The ‘Holiday Paradox’
A common mistake among UAE residents is switching off the AC entirely during summer vacations. Ramachandran explains that in a humid climate, residual moisture settles in the ducts and coils when the system is off. This creates a breeding ground for microbial growth. When residents return and flip the switch, the system recirculates weeks of accumulated allergens and bacteria.
Expert Tips for a Healthier Home Environment
To mitigate health risks while staying cool, experts recommend a disciplined approach to AC maintenance:
- The 24°C Rule: Maintain indoor temperatures between 22°C and 24°C. Every degree lower than 24°C can increase cooling costs by up to 9% and place unnecessary strain on the body.
- Monthly Maintenance: Clean or replace filters at least once a month. For households with pets or children, professional deep cleaning every quarter is advised.
- Manage Humidity: Keep indoor humidity between 40% and 60%. If it exceeds 60%, mould can grow on furniture and walls regardless of AC cleanliness.
- Vacation Settings: While away, set the AC to a constant 25°C or 26°C on ‘Dry’ mode. This keeps the air moving and removes moisture without incurring high energy bills.
Dr. Razim Abdul Rasheed, ENT Specialist at Aster Clinic, advises avoiding direct cold airflow and staying hydrated to counter the drying effects of the AC. For those with pre-existing conditions like asthma or sinusitis, these steps are essential to prevent the cooling system from becoming a constant health trigger.
