Is air conditioning expensive to run?
How much a split air conditioner costs to run per hour, per day and per summer in the UK.
Running cost per hour
A modern 2.5 kW split system typically draws around 0.6–0.8 kW of electricity when cooling. At 25p per kWh that is roughly 15–20p per hour.
Over a summer
Using a bedroom unit for 6 hours a night for 60 nights would typically cost £55–£75.
Keeping costs down
Choose an efficient inverter model, keep filters clean, and set a sensible temperature — 22–24°C is comfortable for most people.
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