Let dishes dry without extra heat
Why this can help
Switching off an optional powered-drying stage can reduce a dishwasher's electricity use. The effect depends on its drying technology and the setting actually changed.
One possible next step
Check whether the dishwasher offers an approved air-dry or no-heated-dry setting, and try it for a suitable load with enough drying time.
What changes the outcome
The default is a historical test example, not a modern dishwasher average. Some machines already dry without a separate heater. Follow the manual; keep required wash, rinse and hygiene stages. Do not alter wiring or interrupt a running cycle.
Your illustrative scenario
Over one year · with the assumptions below
You
37.44 kilowatt-hours of electricity less
You + 10 friends
411.84 kilowatt-hours of electricity less
1,000 participants
37,440 kilowatt-hours of electricity less
These are scenarios, not measured personal or collective savings. One separate household per participant. People sharing a home count it once, not once each.
Your inputs
- With optional heated drying
- 0.94 kWh/cycle
- Without optional heated drying
- 0.76 kWh/cycle
- Cycles changed each week
- 4 cycles/week
- Weeks each year
- 52 weeks/year
Calculation of the difference: (0.94 − 0.76) kWh × 4 × 52 = 37.44 kilowatt-hours of electricity
Calculation boundaries
Machine electricity for otherwise comparable completed cycles, retaining the required wash and rinse stages. External hot-water heating, water volume, manufacture and carbon are excluded. Do not add this whole-cycle difference to an eco or full-load saving for the same dishes without a combined comparison.
Historical example from one Kenmore 665-1658220 tested in a 2008 study: 0.94 versus 0.76 kWh per cycle, both at 120°F (about 49°C) inlet. Four cycles weekly and 52 weeks are assumptions. This is not a modern average or an isolated measurement of the heater; replace both values with matched data for your machine.
Sources and calculation references
- Purchasing Energy-Efficient Residential DishwashersU.S. Department of Energy, Federal Energy Management Program · 2023
- How Energy Efficient Are Modern Dishwashers?David E. Hoak, Danny S. Parker and Andreas H. Hermelink, Florida Solar Energy Center · 2008
Read the method: universalizable.com/en/method/ · One sheet · print double-sided, long-edge binding