Scroll down to use our calculator to work out your summer energy costs based on your device and useage We’re beginning to see the first glimpses of hot weather after the long wet months of winter. Yet just a couple of days of 29-degree temperatures has been a powerful reminder of how ill-equipped we – and our homes – are for scorching weather. Forget opening a window: Britain has “undergone a significant transformation over the years” where air con is concerned, according to a report last year from 6WResearch, with increasing numbers of us looking to install a full-time circulatory system to beat the heat. With last June reaching record highs, and temperatures in the 30s becoming more common, cooling systems once dismissed as being too American are now becoming the preserve of British homes, too. “Hybrid working means that more people are spending time at home during the warmest hours of the day,” says Ben Gallizzi, energy expert at Uswitch.com. With 39 per cent of British employees now working from home, according to figures from the Office for National Statistics from June (compared to 4.7 per cent pre-pandemic), it’s perhaps inevitable that “more households are taking the plunge and...