What air conditioners and fans cost to run
A fan moves air across you; an air conditioner moves heat out of the room. That is why a fan costs a fraction of an air conditioner to run, and why the two are not interchangeable in a heatwave.
Side by side
| Appliance | Typical power | An hour | A year, typical use |
|---|---|---|---|
| Window air conditioner | 666.7 W | 17.5p | £219.59 |
| Window fan | 152.5 W | 4.01p | £66.97 |
| Ceiling fan | 17.3 W | 0.46p | £7.09 |
More calculators
- Electricity cost calculator
Any appliance, from its wattage.
- Whole-home estimator
Add up everything you run, and check it against your bill.
- Electric car charging
What charging at home costs, against petrol or diesel.
- Heat pump or gas boiler
Running costs, payback and emissions.
- Battery backup
How long a home battery runs your essentials in a power cut.
- Solar panels
System size, production and payback for your roof.