If you want a dishwasher that saves money, water, and energy—and still leaves your dishes spotless—choosing an energy efficient model is one of the smartest moves you can make. This in-depth guide covers how to spot true energy efficiency, which brands and features matter, and practical tips to get the most from your machine. Here’s everything you need to know about buying and using an energy-efficient dishwasher.
Quick Picks: Top Energy Efficient Dishwashers
- Bosch Serie 6 Free-standing Dishwasher – Highly rated for its EcoSilence Drive, Auto Sensor cycle, and 4.5+ star energy/water ratings. View latest price
- LG QuadWash Freestanding Dishwasher – Multiple spray arms, smart inverter, and turbo/eco cycles for both quick and efficient washes. View latest price
- Siemens iQ500 Dishwasher – Zeolith drying technology, flexible loading, and a super low energy/water profile. View latest price
Why Energy Efficiency Matters
- Lower power and water bills: Efficient dishwashers can save hundreds of dollars over their lifetime.
- Better for the environment: Less energy and water use means a smaller carbon footprint and less strain on natural resources.
- Modern features: The most efficient models often come packed with the latest tech, sensors, and smart options for convenience.
How to Read Energy & Water Labels
- Energy Rating Label: Shows star rating (more stars = more efficient), annual kWh use, and program time.
- Water Rating Label (WELS): Tells you litres per cycle and water star rating—lower water usage means better efficiency.
- Compare apples to apples: Always compare dishwashers of the same capacity (place settings) to make ratings meaningful.
Key Features That Improve Efficiency
- Sensor/Auto Cycles: Automatically detects soil and adjusts water, heat, and run time for maximum savings.
- Stainless Steel Tub: Holds heat better, uses less energy, and is more durable than plastic.
- Efficient Drying (Auto Open/Zeolith): Auto door opening or Zeolith drying avoids energy-wasting heated air cycles.
- Half-Load or Zone Wash: Use less water and energy for small loads—ideal for singles or couples.
- Good Rack Design: Maximises water coverage and reduces the need for repeat cycles.
- Quiet Operation: Efficient motors and better insulation mean lower noise and less wasted energy.
How to Use Your Dishwasher for Maximum Efficiency
- Wait for a full load: Running a half-empty machine wastes energy and water, even on efficient models.
- Skip pre-rinsing: Modern machines are built to handle mess—rinsing first only wastes water.
- Use auto or eco mode: Sensor-based or “eco” cycles use less power and water compared to normal or heavy cycles.
- Run at off-peak times: If you have time-of-use energy tariffs, use the delay start so your dishwasher runs when electricity is cheapest.
- Open the door after the cycle: Let dishes air dry to save on power-hungry heated drying phases.
- Clean filters and spray arms regularly: Clogs reduce cleaning efficiency and can increase energy use.
- Load properly: Don’t block spray arms. Make sure water can reach all surfaces in a single pass.
- Use a quality detergent: The right soap helps the dishwasher work better, so you don’t need to run extra cycles.
Comparison Table: Top Energy Efficient Models (2025)
| Name | Key Features | Energy/Water Use | Specs/Capacity | Price Link |
|---|---|---|---|---|
| Bosch Serie 6 | EcoSilence, Auto Sensor, Eco drying | 4.5 stars, 9L/cycle | 14 place settings | View Price |
| LG QuadWash | Smart inverter, Turbo/Eco, Steam | 4.5 stars, 9.5L/cycle | 15 place settings | View Price |
| Siemens iQ500 | Zeolith drying, Auto open, iSensoric | 4.5 stars, 9.5L/cycle | 13 place settings | View Price |
Energy Efficient Technology Explained
- Eco Programs: Run at lower temperatures and use longer cycles to save energy—perfect for everyday loads.
- Soil Sensors: Adjust time and water to suit how dirty your dishes actually are.
- Zeolith Drying (Siemens/Bosch): Uses a mineral chamber to absorb moisture and release heat, drying efficiently without extra electricity.
- Auto Door Opening: Pops the door open at the end of the cycle to release steam and finish drying with ambient air.
- Inverter Motors: Run more efficiently, last longer, and are much quieter than traditional motors.
- Half-Load/Zone Wash: Lets you clean just one rack or half the machine for smaller loads.
Energy Efficiency Checklist: What to Compare
- Energy star rating (the more stars, the better)
- Annual kWh and water use
- Eco and auto cycles
- Drying technology (fan, auto door, or Zeolith)
- Tub material (prefer stainless steel)
- Brand/service reputation
- Noise level
- Flexible racks/space
- Warranty and spare parts
Real-World Tips for Reducing Dishwasher Costs
- Always run a full load (but don’t overload).
- Check and clean the filter monthly.
- Use off-peak electricity rates if available.
- Choose a machine with an eco or auto program and use it regularly.
- Open the door for natural drying to save extra energy.
Frequently Asked Questions
How much can I save with an energy efficient dishwasher?
Efficient models can use up to 30% less electricity and 40% less water than old or cheap machines. Over 10 years, this can mean savings of several hundred dollars or more—especially if you run your dishwasher daily.
Is hand washing cheaper than using a dishwasher?
Not usually! Studies show a modern, full dishwasher uses less water and energy than washing by hand, especially if you run full loads and skip pre-rinsing.
Do eco programs really work?
Yes—eco modes use lower temperatures and less water over a longer time, resulting in lower overall energy use. For heavily soiled pots, use the intensive mode only when needed.
Does a higher star rating always mean better cleaning?
No—star rating is for efficiency, not cleaning power. That’s why it’s important to check reviews and lab test results as well as specs.
Are more efficient dishwashers more expensive?
They can cost a bit more up front, but typically pay for themselves over their lifetime with lower bills and better reliability.
Conclusion & Call to Action
Choosing an energy efficient dishwasher isn’t just about the specs. Look for real-life cleaning results, good star ratings, practical features like auto cycles and eco drying, and a brand you can trust for years of use. If you follow the tips above and use your machine wisely, you’ll enjoy spotless dishes with less impact on your wallet and the planet.
Ready to upgrade? Compare the latest deals from Bosch, LG, Siemens, and more at trusted retailers—your next electricity bill will thank you!