How Much Does A Washing Machine Cost Per Wash?
Reference table
| Scenario | Power | Use time | Cost at 24.67p/kWh |
|---|---|---|---|
| Eco wash | 300W | 3 hours | 22.20p |
| Mixed wash | 500W | 1.50 hours | 18.50p |
| Hot wash | 1,000W | 1.50 hours | 37.01p |
What to know
The peak rating on a washing machine can be misleading because the heater is not on for the full cycle.
Practical guidance
Hotter washes generally cost more because heating water drives energy use.
How to use this
Drying choices often matter more than washing cost, so compare the full laundry routine.
FAQs
Is eco mode always cheaper?
Usually, though it may take longer.
Does cold fill matter?
Most modern UK machines heat water internally, so cycle temperature matters.
What about water cost?
This guide covers electricity only.
Should I always wash full loads?
Full loads are efficient, but avoid overloading because cleaning performance can drop.
Last reviewed 3 May 2026. Source: Ofgem energy price cap. Figures are estimates. Actual prices vary by region, supplier, tariff, payment method and meter type.