As summers become hotter, air conditioner sales are booming in the UK. With temperatures inside some homes reaching close to 40C during heatwaves, many residents are considering investing in cooling systems. However, questions remain about the environmental impact of such devices.
Jon Connorton, a software developer from east Hampshire, uses a portable air conditioner during emergencies. These plug-in devices cool interior air by removing heat and expelling it outside via a hose. Connorton only runs the unit when his solar panels can cover its power needs, yet he still feels conflicted about its use. 'You feel it’s a luxury and that you’re being bad for the environment,' he said.
For those seeking greener options, portable air conditioners can be powered by renewable energy sources like solar panels. Additionally, fixed split-system units are often more efficient than portable ones. The Energy Saving Trust notes that running a typical portable air conditioner for eight hours a day during a heatwave could cost around £1.50 per day based on current electricity prices.
Ultimately, the greenest approach is to minimise the need for air conditioning through insulation, shading, and ventilation. But if cooling is necessary, choosing an efficient unit and powering it with renewables can reduce environmental harm.



