UK households are being urged to switch off and unplug electronic devices from Tuesday as temperatures are expected to soar into the high 30s Celsius in parts of England, with some areas potentially reaching 38C. The Met Office has issued an amber heat warning and a rare red weather alert, with very hot conditions expected to continue through the middle of the week.
Why Unplugging Matters
As many homes struggle to stay cool during prolonged heat, experts advise turning off and unplugging appliances not in use. This simple step helps keep homes cooler, reduces the risk of appliances overheating, and eases pressure on the electricity network. Appliances that should be switched off include irons, ovens, electric fires, and air fryers. Government and NHS heatwave guidance also recommends turning off unnecessary lights.
One key reason is that many electronic devices generate heat even when seemingly switched off. Televisions, games consoles, computers, printers, and chargers produce small amounts of heat while plugged in. Individually, the effect is minor, but multiple devices running or on standby throughout the day can gradually build up heat indoors. This is particularly noticeable in UK homes, which are often designed to retain heat in winter rather than release it in summer.
Expert Advice
Amanda Nelson, co-owner of Young Cardinal Electric, said: "During a heatwave, unplugging anything non-essential can be a surprisingly effective way to reduce unnecessary energy consumption. Not only does this help limit excess heat generated indoors, but it also reduces demand on local power grids, which are often under increased pressure as households ramp up air conditioning and cooling systems."
Appliance expert Bill Gilbert from iFixit warned about the impact of extreme temperatures on household equipment. He said: "In the extreme conditions experienced during heatwaves, appliances can be more susceptible to overheating, especially if they are older or have worn components. Unplugging them reduces the risk of overheating, which can lead to malfunctions, damage to the appliance, or even fire hazards."
Appliances to Avoid During Peak Heat
The biggest heat-generating appliances include ovens, hobs, kettles, air fryers, tumble dryers, and dishwashers. Experts suggest running these early in the morning or later in the evening when temperatures are lower. Other devices worth switching off include televisions, desktop computers, games consoles, printers, and smart speakers when not in use.
However, some appliances must remain on. Fridges and freezers should never be unplugged during a heatwave. Internet routers may also need to stay connected if households rely on security systems or smart home devices.
