Your dishwasher can add up to £70 a year to your energy bill, and that's on top of the initial purchase price, water rates and the cost of dishwasher detergent.
Taking running costs into account when its time to buy a new dishwasher will save you hundreds over your appliance's lifetime. When we test and review dishwashers we calculate the annual energy running costs - as well as how good they are at getting your plates sparkling clean - to make it easy for you to identify the cheapest-to-run machines.
You can find information about running costs in each of our dishwasher reviews, but for an at-a-glance guide use our tool below to compare running costs over a dishwasher’s lifetime and how this affects the true cost of the dishwashers you see in the shops.
Although most dishwashers have an official A-rating for energy efficiency, Which? tests of hundreds of dishwashers have found significant differences in electricity and water use. Which? gives each model a star rating of one to five for energy and water use. Look out for dishwashers with energy efficiency rating of four stars or more when you compare dishwasher features and prices.
Those dishwashers we've tested that rank in the top 10% of Best Buys for energy efficiency are awarded our prestigious Energy Saver Logo. Look out for this to make sure you choose a great dishwasher that keeps your electricity bills down.