Work out vacuum cleaner energy cost instantly with clear inputs, formula shown and shareable results.
Vacuum cleaners run for short periods, so annual cost is small: 750 W for fifty minutes a week is about 32 kWh and nine pounds a year. EU regulation capped motor input at 900 W in 2017, and cleaning performance did not suffer because airflow design matters more than raw power.
Vacuum cost
annual kWh = rating (kW) x minutes per week / 60 x weeks; cost = kWh x tariff
No. Suction at the head depends on airflow and sealing, not motor input. Well-designed 700 W machines outperform old 2,000 W ones.
Slightly, because they draw less power, but battery replacement every few years usually outweighs the electricity saved.