An energy expert has shared practical tips for maintaining comfortable home temperatures during hot weather without driving up energy costs. Angus Struthers, managing director at boiler and air conditioning installation firm BOXT, warned that some common practices may inadvertently increase indoor heat and cooling expenses.
Simple Changes to Reduce Heat
Struthers highlighted that using an extractor fan during a shower can help remove warm, humid air, preventing it from accumulating indoors. He also recommended using fans alongside cooler evening air for natural ventilation, rather than relying on them in sealed, overheated rooms where they only circulate warm air.
“There are plenty of small changes that can help reduce unnecessary energy use during the summer,” Struthers said. “Even something as simple as using your extractor fan during a shower can help remove warm, humid air instead of letting it build up inside the home.”
Hidden Heat Sources
Many homeowners are unaware of the significant heat generated by everyday appliances. Struthers identified four common offenders: tumble dryers, dishwashers, ovens, and gaming PCs. These devices can quietly raise indoor temperatures, particularly in smaller homes or flats, making it harder and more expensive to keep cool.
“A lot of people don’t realise how much extra heat everyday appliances generate during a heatwave,” he explained.
Proper Use of Cooling Devices
For those using air conditioning or fans, Struthers emphasised correct usage. Portable air conditioning units can be costly if they are too small for the room or improperly vented, leading to constant operation with little temperature difference. Fans do not lower room temperature but create a cooling effect, making them most effective when combined with proper ventilation during cooler evening hours.
Prevention Over Cure
Struthers advocated for proactive measures to block heat entry. “One of the cheapest ways to keep your home cool is by stopping the heat getting in to begin with,” he said. “Keeping blinds closed during the hottest part of the day, being smart about when you open your windows and preventing heat from building up indoors can all make a real difference.”
He added: “It’s much cheaper and easier to stop a home overheating than it is to cool it once it already feels like an oven. Taking simple steps to keep heat out in the first place can help reduce the amount of energy needed to stay comfortable during a heatwave.”
