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Air conditioning safety and health risks

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2026-08-15 21:18 UTC → 2026-08-22 04:00 UTC · added removed

Experts have identified several health and safety risks associated with the prolonged use of air conditioning during extreme heat. Initial warnings focused on physical hazards, including fire risks from poorly maintained or overloaded electrical connections in units operating in temperatures above 40 °C. Additionally, health officials noted the potential for Legionnaires’ disease caused by Legionella pneumophila bacteria proliferating in moist air-conditioning environments. Subsequent warnings expanded to include indoor air quality concerns. Because many modern units units, particularly split-type systems, recirculate indoor air rather than introducing fresh outdoor air, there is a risk of rising carbon dioxide levels. This can lead to symptoms such as dizziness, nausea, cerebral hypoxia, or carbon dioxide poisoning. To mitigate these issues, this, experts recommend regular maintenance, filter cleaning, and manual ventilation by opening windows periodically for approximately 10 minutes every three to four hours to facilitate airflow. Medical professionals have further clarified that while air conditioning does not directly transmit viruses, improper use can cause respiratory issues. Dr. Frédéric Le Guillou noted that reduced humidity can dry out mucous membranes, leading to irritation or coughing, while poorly maintained units can disperse dust, mold, and bacteria. To manage allergy and asthma risks, experts suggest cleaning filters every three to four weeks. To prevent muscle contractures, headaches, and fatigue, Dr. Maryse Zaleski-Zamenhof advises maintaining indoor temperatures between 25°C and 26°C, ensuring the difference from the outside temperature does not exceed 5 to 7°C. Users are also cautioned against directing cold airflow directly at themselves to avoid eye and throat dryness.

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  1. 2026-08-22 04:00 UTC Air conditioning safety and health risks
  2. 2026-08-15 21:18 UTC Air conditioning safety and health risks

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