As another heatwave hits the UK, many households are considering investing in portable air conditioners. However, with energy bills set to rise by £1,973 on average in July, experts warn that running costs can add up significantly.
According to Ben Gallizzi, energy expert at Uswitch, around four million UK households now have air conditioning, and the number is growing each year as summers get hotter. While air conditioning can improve comfort and sleep quality during heatwaves, the cost of running these units varies. Alex Peters, a cost expert at Checkatrade, estimates that running an air conditioner typically costs between 20p and 60p per hour, depending on factors such as system type, age, efficiency, usage, and insulation.
Gallizzi adds that portable air conditioning units typically use 1kW of power, costing nearly 25p per hour. Built-in systems can be more energy-intensive, with a 2.7kW unit costing 67p per hour at full power. To keep costs down, experts recommend ensuring windows are properly sealed, investing in a smart thermostat, and performing regular maintenance such as cleaning filters every month or two.
Choosing the right air conditioner also makes a difference. Portable monoblock units have lower upfront costs and can be moved between rooms, but are less efficient and better suited for occasional use. Split systems are more efficient, quieter, and offer better temperature control, making them ideal for long-term use. For those not wanting to invest in air conditioning, a desktop fan uses about 1p per hour and can be bought for as little as £10.
