Choosing an efficient dishwasher can save you up to $600 in energy costs over 10 years, compared to using an inefficient model.
Choosing a dishwasher
- Choose the right size dishwasher - slim line or single drawer dishwashers are great if you only have a small amount of dirty dishes in your household.
- Compare the Energy Rating Labels of dishwashers of similar sizes and types - the more stars, the cheaper to run. All dishwashers have energy rating labels so you can see roughly how much electricity they use in a year.
- If you’re comparing different sizes or types of dishwashers - for example a full sized versus a single drawer model, then ignore the stars and look at the annual energy consumption (kWh per year).
- Look for the ENERGY STAR mark - to find dishwashers that use up to 50% less electricity.
- Choose models with an ‘eco', ‘half load' or ‘fast' wash setting - they will help you save water and energy.
- If you have a wetback, solar water heater or heat pump water heater - consider choosing a model with a hot water connection for lower running costs and shorter cycle times. Check the maximum hot water-inlet temperature and make sure you have a suitable tempering valve on your hot-water system. Connect dishwashers with a single water connection only to cold water.
Smart use of dishwashers
- If you rinse dishes before loading - use cold water.
- Regularly clean your dishwasher's filter - with a brush and hot soapy water. Check the spray arms also as holes can get clogged.
- Only run the dishwasher when it’s fully loaded.
- Use the machine's eco-cycle - or select the cycle with the lowest temperature and minimum time to get the job done. If you use the eco-cycle regularly, use a normal or hot cycle every now and then to prevent grease build-up in the dishwasher.