Breaking AI & Tech News Analyzed

The UK's Cooling Revolution More than 4 million homes in the UK now have air conditioning, double the figure from just three years ago, marking a significant shift in how British households cope with increasingly hot summers. Types of Cooling Systems and Their Usage Portable units with power ratings around 1kW are slightly more common than the more powerful built-in versions that can guzzle 2.7kW of power – more than an electric oven. Of the 4 million households with air conditioning, nearly 1.9 million have built-in units, while 2.2 million homes use portable air conditioning units. More than 260,000 UK households have heat pumps that can be used to cool homes. When used in cooling mode, heat pumps work like traditional air conditioning units by extracting heat from the home and releasing it outside. The Financial Impact of Cooling The energy consumption and associated costs of air conditioning are substantial. In a typical week, households use their built-in units for about four hours at a cost of £2.93. However, during heatwaves when usage increases to over nine hours daily, weekly costs soar to £42.43. Portable units, which use 1kW of power, typically cost 83p per week with three hours of usage. During hot spells, when used for more than nine hours daily, this rises to £15.71 weekly. Climate Change Drivers Experts suggest the increase in air conditioning ownership is the result of more people working from home and rising summer temperatures. Some of the UK's warmest summers have been in recent years, with the record high of 40°C set in July 2022. The government's climate advisers have warned that British homes will need air conditioning to survive predicted levels of global heating, as traditional cooling methods like drawing curtains and opening windows become insufficient. Future Projections and Recommendations The Climate Change Committee has recommended that air conditioning should be installed in all care homes and hospitals within the next 10 years, and in all schools within 25 years. Heatwaves were expected to exceed 40°C in all parts of the UK by 2050, potentially leading to an additional 10,000 heat-related deaths annually. With about nine in ten UK homes likely to overheat, the adaptation to higher temperatures is becoming increasingly urgent. However, air conditioning is energy intensive, accounting for about 4% of global greenhouse gas emissions. Sustainable Cooling Solutions Sam Alvis, head of energy security at the IPPR thinktank, called for more solar panels on roofs alongside air conditioning installations. "We are going to have to get used to being a hot country, which is quite a mindset shift for the UK," he said. "Air conditioning is actually a great pair for solar from an energy system point of view because it matches supply and demand." More efficient modern systems using heat pumps, which are already subsidized by the government to replace gas boilers, could provide a more sustainable cooling solution, though these are rarely installed at present.