With temperatures set to exceed 25°C across much of the UK this bank holiday weekend, many are seeking ways to stay cool. A common question is whether to keep windows open or closed during a heatwave. Seven experts consulted by the Liverpool Echo broadly agree: windows should not be left open all the time.
Johanna Constantinou, interior trends expert at Tapi Carpets and Floors, said leaving windows open during the hottest part of the day is a significant mistake. She recommends keeping windows, curtains and blinds closed from late morning to early evening to prevent warm air and direct sunlight from building up indoors. Once temperatures drop in the evening, open windows on opposite sides of the home to create cross ventilation.
Martyn Bridges, Director of External Affairs at Worcester Bosch, echoed this advice, suggesting windows should be closed during the hottest parts of the day, especially in sun-exposed rooms. He also advises keeping blinds or curtains closed to reduce solar gain.
For sleeping, Dr Katie Tryon from Vitality Health recommends keeping the bedroom cool by drawing curtains and closing windows during the day. At night, when the air is cooler, leaving a window ajar can help. Dr Punam Krishnan, working with Stannah, emphasises cooling the body as well as the surroundings for better sleep quality.
Victoria Robinson, product expert at Hillarys, advises opening windows on opposite sides of the home in the evening to create a cross-breeze. Professor Chris Sansom from the University of Derby also recommends this tactical approach to cooling.
