UK households are being urged to double-check their smoke alarms to ensure they are in full working order as the nation swelters through another record-breaking heatwave. When temperatures rise, electrical systems and appliances can overheat, increasing the risk of fires. Electrical safety checks, including verifying that smoke alarms function properly, are essential during summer heat to catch problems before they arise.
Record-Breaking Heat and 'Tropical Night'
The warning comes as the Met Office confirmed that May has set a new temperature record. The mercury rose to unprecedented heights, with meteorologists describing a 'tropical night' in the UK. The highest daily minimum temperature for May was recorded overnight, as the temperature did not fall below 21.3C at Kenley Airfield in south London, officially making the night tropical.
Risk of Electrical Fires from Fans
As Britons turn to pedestal fans for cooling, appliance repair expert Ian Palmer-Smith from Domestic & General has warned against leaving fans on all night. 'I would never recommend leaving your fan on overnight,' he said. 'With hot evenings, it is tempting to leave it on while you sleep, but if a fault occurs in the equipment while you are asleep, you put yourself and your family at risk.' Licensed electrician David Miloshev echoed this, advising to turn fans off before sleeping and to ensure smoke alarm systems are in working order.
Health Hazards of Overnight Fan Use
Beyond fire safety, Dr. Kiran Dintyala warned that fans circulate dust and pollen, which can trigger severe reactions in allergy and asthma sufferers. The continuous airflow can dry out a room, leading to dehydration, dry eyes, sinus infections, bronchitis, and nosebleeds. Sleeping with the mouth open can cause a sore throat by morning. Additionally, exposure to cold air all night may result in stiff, aching muscles.
Sleep expert Martin Seeley, CEO of Mattress Next Day, agreed that fans should be turned off overnight regardless of humidity. He noted that fan blades often accumulate dust, which is then blown into the room, causing itchy eyes, runny nose, sneezing, or breathing difficulties. He added that even mild dehydration from the heat can worsen daytime fatigue, so staying hydrated is crucial. For those with pre-existing muscle pain, directing the fan at affected areas should be avoided.
Experts urge households to check smoke alarms regularly and consider alternative cooling methods to stay safe during the heatwave.
