Russian doctor offers five tips for safe air conditioner use in summer

A Russia-based physician, Dr. Nadezhda Chernyshova, has issued guidance on safe air conditioner use during hot summer months, warning that abrupt shifts from hot outdoor air into cooled indoor spaces can trigger a range of health problems. Chernyshova recommended keeping the temperature difference between outdoor and air-conditioned environments below 10 degrees Celsius and lowering the temperature gradually. She cautioned against setting the air conditioner to 18 degrees, saying such cold settings can lead to colds, flare-ups of chronic illnesses and elevated blood pressure. The doctor advised ventilating rooms every three to four hours by turning off the device before opening a window, and suggested turning the air conditioner off during nighttime sleep after cooling the room in advance. She also warned that air conditioner filters that are not cleaned regularly can accumulate pollutants and microorganisms, reducing indoor air quality. Chernyshova said following these basic rules can help the body adapt to high temperatures and reduce health risks linked to air conditioner use.