Energy consumption dishwasher

On average, a dishwasher with energy label A consumes 1 kWh of electricity per wash. Dishwashers with energy label C or D consume between 1,4 & 1,5 kWh per wash.
Looking for a new dishwasher? Then you naturally want it to be as energy-efficient as possible and not use too much water and electricity. That way, you'll save a lot of money every year. This page tells you everything you need to know about how much a dishwasher costs in terms of water and energy.

Energy consumption dishwasher



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A wash geek since 2017

Is a dishwasher environmentally friendly?

In the first four years, a dishwasher uses as much electricity for washing as it takes to produce a new model, so it’s not very environmentally friendly.

In an average household, a dishwasher accounts for about 10% of total electricity use, slightly less if it is an energy-efficient dishwasher. This makes a dishwasher the least efficient of all household appliances, but you should bear in mind that it is the most frequently used. Also, a dishwasher is often on standby, which means it uses energy even when it is not running.

The parts of an old dishwasher can often be reused almost entirely for other purposes.

Is a dishwasher energy efficient?

If you use a dishwasher in the right way, you can save a lot of money on power consumption. For starters, you can always choose to use eco mode for each wash. This significantly reduces the number of litres of water used, and because it also uses cold water, it doesn’t require as much energy to heat the water.

Secondly, you should always make sure that you load your dishwasher properly so that it is fully loaded for each wash. A standard size dishwasher has room for about 14 place settings.

You can also choose to make your dishwasher more energy efficient yourself by connecting it to a partial hotfill. This connects the unit to both the hot and cold water lines, reducing the amount of electricity needed to heat the water. This option can make old dishwashers more energy efficient, but it is very pricey.

Is an energy-efficient dishwasher better than dishwashing?

This question isn’t easy to answer, because it has everything to do with how you clean your dishes by hand.

Suppose you do that for 15 minutes with hot water from a running tap, while the hot water is heated with an electric close-in boiler, then an energy-efficient dishwasher may well be a better alternative to washing your dirty dishes by hand. This is because an electric boiler uses just as much energy to heat the water as the average dishwasher does.

Also, if you use too much detergent, a dishwasher can be more economical than hand washing. This is because it takes too long to get all your dishes clean, which means you use more and more water.

In addition, a dishwasher also has the option to save your dirty dishes for a little longer. You no longer have to wash the dishes every time, as your dishes are stored in the appliance out of sight. So instead of doing the dishes by hand three times a day, you might end up doing the dishes by hand once every three days. This can also be much more economical when using the eco program.

What does a new dishwasher cost?

The consumption of a dishwasher does not always have to be shockingly high. You should keep in mind that an intensive program uses more energy and water than an eco program.

A normal program on an average dishwasher costs an average of €0.25 for both water and energy, with an economical program this can go down to €0.18.

The energy label contains all the information you need to determine your own consumption of electricity and the number of liters of water. The energy consumption is listed per 100 washes, and the water consumption is listed per wash on the energy label.

When buying a dishwasher, keep in mind that there is the old label and the new label. A dishwasher in the store with label b may previously have had energy label A.

To ensure that your dishwasher actually maintains the same power and water consumption, you need to maintain it properly. Clean the filter regularly with warm water and never fill the machine completely.

What energy class is a good dishwasher?

Most dishwashers currently offered have an energy label between C and E. That equates to average use that is relatively economical. Want to save more energy? Then choose an A or B-rated dishwasher.

You can also reduce your energy consumption with a dishwasher with a lower energy rating. A few handy tips:

Always choose a lower temperature.

Make sure your dishwasher is full, but that there is still enough space between each item.

Rinse very dirty dishes under the faucet first.

Make sure you have enough space between each item.

Picture of Yannick

A wash geek since 2017

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