Air Conditioning Doesn't Cause Colds, But Poor Use Increases Risk

Air conditioning does not cause respiratory infections, but its improper use can facilitate virus transmission. Experts emphasize that cold air itself is not the culprit; viruses such as rhinovirus, seasonal coronaviruses, and influenza are responsible. The problem lies in how AC systems affect indoor air quality.

Myth vs Reality

Edmundo Fernández Piñeiro, nursing professor at Universidad Europea, explains that "el aire acondicionado bien utilizado mejora el confort térmico y evita los problemas que asociamos erróneamente al frío" Source: lavanguardia. He stresses that infections are caused by viruses, not cold temperatures. Sandra Dorado, pulmonologist at SEPAR, notes that AC reduces humidity, which can dry mucous membranes and weaken natural defenses Source: lavanguardia.

Health Tips

• Maintain temperature around 24°C and avoid direct airflow.
• Clean filters regularly to prevent dust and allergens.
• Ensure proper ventilation to reduce pathogen concentration.

Fernández Piñeiro warns that "el flujo de aire directo puede generar microinflamación local" causing throat irritation mistaken for a cold Source: infobae. Both experts agree that responsible AC use—maintenance, ventilation, and avoiding prolonged exposure—is key to comfort without health risks.