Home Tech Vault practical guide
How do I compare electricity costs between appliances?
Compare energy use over the same period and apply the same electricity rate. If labels provide annual kWh, multiply each figure by your rate for a consistent estimate.
By Home Tech Vault · Reviewed October 21, 2026
Compare comparable use
Capacity, settings, load size and usage frequency matter. Two appliances doing different amounts of work are not a fair like-for-like efficiency comparison.
Distinguish operating and purchase cost
Lower energy use does not automatically justify replacing a working appliance. Compare the energy difference with the all-in purchase cost and your expected ownership period.
Record your assumptions
Keep the source of each energy figure, the rate used and the date checked. Recalculate if your usage or tariff changes instead of treating the result as permanent.
Try it with your own numbers
A 1,000-watt appliance used one hour daily at $0.15/kWh costs $4.50 over 30 days and about $54.75 over 365 days.
Open the free appliance running cost calculator →
Cycling appliances do not continuously draw their rated maximum power. Use measured average consumption or the EnergyGuide label when available. Fixed utility fees are excluded.