The electricity usage of a dishwasher may vary considerable depending on the efficiency and age of the appliance.
If you already have a dishwasher at home or if you are considering to buy one, it is worth to spend a little time and find out the electricity usage and the electricity cost.
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A dishwasher uses between 1200 and 2400 Watts of power, with an average of around 1800 Watts.
The electricity usage, or the power consumption, should be clearly displayed or easily at the appliance itself of easily accessible online.
Still, this is not always the case.
PRO TIP: Generally if the electricity consumption is low, the power consumption details are easy to find. And the opposite, is the electricity usage is higher that other similar dishwashers, the power consumption details may be a bit hidden.
For the dishwasher displayed on the picture below, the specifications state that it consumes 237 Kilowatts hour (kWh) per year.
If you only know the voltage and current of your dishwasher, you can calculate the power consumption, in Watts, using the calculator below.
For more information about Power, Voltage and Current, scroll down to the ‘Electricity Measurement Units’ section.
Once we know the yearly power consumption, the calculator below can be used to estimate the power and cost consumption of the dishwasher.
You just need to adjust the values in the PARAMETERS section to your requirements and the calculator will automatically display the RESULTS section.
> If your dishwasher has yearly power usage of 237 kWh
> If you are paying 0,2 euro (or dollars, or pounds, or …) per every kWh you consume
You will be paying around 47 euro (or dollars, or pounds, or…) per year in electricity costs.
If you don’t know how much you are paying per kWh, you should be able to find the cost per kWh on your electricity contract or in one of the electricity bills.
Alternatively, if don’t have access to your contract or your electricity bills, this website does show the electricity cost per country.
A few other examples from our ‘Electricity usage and electricity cost calculators‘ page that may be of your interest:
If you want to know the exact electricity usage of a dishwasher, your best option is to use a plug in power meter to measure the exact power consumption and electricity cost.
Clicking on the image below it will redirect you to the Amazon page where you can have a look to the specifications of the power meter we use for our measurements.
All of our house appliances and devices like the washing machine, the dishwasher, the TV or the printer are plugged to a wall socket.
So, with a power consumption meter we can determine how much electricity our appliances or devices are using and, more importantly, we can measure the electricity usage over a period of time.
Have a look to this YouTube video for more information.
As an example, on our dishwasher, we were using mostly all the time the Auto cycle for washing our dishes.
Once we measured the power consumption using a plug in power meter and we found out that the Eco cycle is much more economic.
Since then, we are using all the time the Eco cycle which is saving us quite a bit of money.
The lesson, if you have a smart appliance, use it smartly.
For more details, have a look to this YouTube video.
If you think that your dishwasher it is using too much electricity, here there are three simple ways to reduce the power consumption of a dishwasher:
1.- Use the energy saving mode
If your dishwasher has an ECO or energy saving mode, use it. It will most proably save you quite a bit of electricity, and water, and decrease your bills.
2.- Fill it up… and do it correctly
Maybe this tip it is an obvious one, but it is worth to mention it. Fill up your dishwasher by neatly staking the dishes, cups, glasses, cutlery in their designated trays.
3.- Buy an energy efficient model
If you have an old dishwasher, it may be worth to start considering to buy a newer and more efficient model. But be careful, do not spend too much money on a mega efficient dishwasher because it may be not worth. In case of doubt, have a look to this post where we explain how to calculate the payback period.
You can use the calculator from the ‘Electricity cost calculator’ to estimate the electricity usage of a dishwasher per month.
Still, note that this is only an estimation and the electricity usage may vary depending on some factors like adequate maintenance or correct usage of the dishwasher.
You can use the calculator from the ‘Electricity cost calculator’ section to estimate the electricity usage of a dishwasher per day.
On the calculator we are assuming that the dishwasher is used once a day. This is, the daily electricity cost correspond to the cost per cycle.
Still, note that this is only an estimation and the electricity usage may vary depending on some factors like adequate maintenance, the correct usage of the dishwasher or the cycle settings.
Our dishwasher at home has the following power consumption per cycle.
Have a look to the answer that we have given to the ‘How much electricity does a dishwasher use per cycle’.
Cycle and load are similar terms but not exactly the same.
For the same dishwasher load, the electricity usage will vary depending on the chosen cycle settings.
It very much depends on the model.
If you own a dishwasher, it must have a specifications label describing the power usage in Watts.
If you plan to buy a dishwasher in a shop, you will be able to find the power usage in Watts by checking the specifications label or asking a shop assistance for support.
If you plan to but a dishwasher online, the website you are visiting should display the power usage in Watts on the description or technical specifications section.
Not everybody it is familiar with terms like Watts, Kilowatts or Kilowatt hours so if you would learn more about them, have a look to this YouTube video that we have prepared about this topic.
Or you can have a look to this electricity measurement units calculators to get a better understanding of:
> What is a Watt (W) and how to transform Watts into Kilowatts
> What is a Kilowatt (kW) and how to transform Kilowatts into Kilowatts hour
> What is a Kilowatt hour (kWh) and how to transform Kilowatts hours to other units
> What are Power (P), Voltage (V) and Current (I)
Energy conservation can be defined as the decision and the act of using less energy
Energy conservation both benefit you and the environment
The act of saving and conserving electricity does benefit you because you will be paying less on your energy bills.
And it also does benefit the environment because conserving electricity prevents any unnecessary waste of natural resources.
Now, at individual level it may not look worth to try to save a few watts here or there.
Still, every little counts and if hundreds or thousands of us do save a little every time, it will make an important contribution towards conserving our natural resources.
If we could reduce the electricity usage of our dishwashers, even a very small amount, it would make a big impact on preserving our natural resources.
For example, if 9000 households would manage to save as little as 10 Watts per day (0,01 kWh) in dishwashers electricity usage, that would add to 32850 Kilowatt hour (kWh) saved per year.
9000 households x 0,01 kWh per day x 365 days per year
32,850 kWh saved per year
That is a considerable amount of electricity, but let’s add additional perspectives for clarity:
> Assuming an average cost of 0,18 euro (or dollars, or pounds, or any other currency) per kWh, we would collectively be saving nearly 6000 euro per year.
> To produce 32,850 kWh of electricity it is necessary to use around 17 metric tons of coal or 56 barrels of residual fuel oil.
In any case it is clear that small energy savings do really count when looking into the bigger picture.
If you are looking for saving electricity ideas at home, have a look to this YouTube video where we provide some useful tips to reduce the electricity usage and decrease the electricity bill.
Buying an energy effcient appliance or device is going to save electricity, water and decrease your energy and water bills, but at what prize?
Find out if you have paid a reasonable prize for that efficient device or appliance.
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