How Much Electricity Does A Dishwasher Use? Brief Answer

Here’s a detailed article regarding How Much Electricity Does A Dishwasher Use? In general, a dishwasher uses less energy than hand-washing dishes. However, depending on how you hand-wash your dishes, some grey areas may exist.

For instance, some individuals rinse their dishes under or after the faucet. Some people continuously run the water, while others choose to fill the sink and stop rinsing. Then there are the sink bowls.

Some people use a lot of water, while others use far less. Most modern dishwashers use, on average, 9.5 to 14 liters of water per cycle. On the other hand, washing your hands can use a lot more.

How Much Electricity Does A Dishwasher Use?

The typical dishwasher uses between 1.2 and 1.5 kWh per load overall.

Electricity Does A Dishwasher Use

How Much Water Does A Dishwasher Use?

For optimal operation, dishwashers require boiling water, which must be obtained from some source. By right, the dishwasher’s total energy usage should include the gas or electricity the water heater uses to supply the appliance.

How Much Water Does A Dishwasher Use

The amount of water the device requires to clean the dishes determines how much energy is used, which in turn depends mainly on when the dishwasher was made:

  • Before 1994, dishwashers might use 10 to 15 gallons of water per load.
  • In older Energy Star dishwashers, a load requires 4 to 6 liters of water.
  • New Energy Star dishwashers of standard sizes, use less than 4 gallons per load.

What About The Energy Consumption Of A Dishwasher Per Load?

Consider the above estimations to be a broad guideline rather than final numbers. Since the amount of power consumed by your model can vary greatly depending on the manufacturer’s design and the cycles you select, it might not be easy to estimate how much energy a dishwasher requires.

The type of dishes in the load and the settings for the soil level will impact elements like water pressure and volume. Another choice is heated drying, which doubles the base power cost to generate additional heat. Your experience may differ, but by utilizing average consumption rates, we can estimate how much the dishwasher will cost you each month in utility costs.

How Much Does It Cost To Run A Dishwasher In Total?

  • Base electricity costs for a dishwasher are relatively low. With a 1200-watt model and an hourly load period, you use 1.2 kilowatt-hours (kWh), which, with a 10-cent per kWh electricity plan, works out to around 12 cents for each load. You will only have to pay $2.40 monthly for minimal electricity use if you use the appliance five days per week.
  • But remember to use hot water. The figures come out as follows, assuming an inlet temperature of 68°F and a target temperature of 120°F:
  • You are looking at 1.27 kWh, or 12.7 per hour, for a 1994 dishwasher that uses 10 gallons per load. That increases your price from 12 to 24.7, or $4.94 per month, more than double the cost of operating the machine’s electric components.
  • An older Energy Star dishwasher with a five-gallon load will require 0.64 kWh or 6.4 per hour. The total running expense of $12 adds 18.4 cents for every load or $3.68 per month.
  • Last but not least, a new Energy Star dishwasher with 3.2-gallon loads only costs 0.38 kWh or 3.8 per hour, which adds up to 15.8 when you factor in the 12 running cost. You’re looking at only $3.16 in costs at 20 loads per month.

How To Use Your Dishwasher Economically?

You may reduce how much money you spend on energy for your dishwasher and other kitchen equipment. To use the least amount of power possible, try these tips:

  1. To limit the number of cycles you run in a week, fill up your dishwasher with a whole load of dirty dishes before running it.
  2. Additionally, avoid overfilling the dishwasher because proper water circulation is necessary for the operation.
  3. When your dishwasher’s cycle is over and the dishes are still hot, open the door immediately to hasten the evaporation process. Doing so can save a lot of energy and avoid using the heated dry setting.
  4. Cleaning your dishwasher regularly will help avoid soap scum, lime scale, and food particles blocking the spray arm and filter, which may decrease performance and impede efficient washing cycles.
  5. Switch to a new energy-saving dishwasher model. As you can see from the instances above, modern dishwashers have drastically increased efficiency.
  6. During the warmest period of the summer, avoid using the dishwasher. Your air conditioner will have to perform harder and consume more energy if you create additional heat within your home.

In some cases, think about washing your hands. Running a dishwasher instead of washing dishes alone consumes less water, especially if you have a high-efficiency model. When you have less than a full load to finish, for example, it makes sense to roll up your sleeves and tackle the work the old-fashioned way. You can still succeed if you only try to reduce how long the faucet is left open.


Most dishwashers consume 1,800 watts on average, and water costs vary by region, season, and even hour of the day. The normal electricity use of a dishwasher is relatively low; for an hour-long load on a 1,800-watt model, you’ll consume only 1.8 kilowatt-hours (kWh) of electricity.

If you use your dishwasher for an hour five days a week, the average cost per kWh in the US is roughly $0.13. Therefore your weekly electricity bill will only be about $1.17.

If you need clarification on How Much Electricity Does A Dishwasher Use? You can use an electricity calculator to determine how much your home spends on electricity each day.

Frequently Asked Questions

Does a dishwasher consume a lot of electricity?

Dishwashers have low initial electricity expenses. A 1200-watt appliance used for an hour consumes 1.2 kilowatt-hours (kWh) of electricity or around 12 cents per load on a 10-cents-per-kWh electricity plan.

Does buying a dishwasher waste money?

However, washing by hand sometimes wastes more than running a light load. Dishwashers are far more energy and water efficient than hand-washing dishes. Recent research by the detergent company Cascade found that the typical person can wash a dish by hand in roughly 15 seconds.

Does using the dishwasher add to the cost of electricity?

Dishwashers are a contemporary convenience that is now expected. They use more than 1,000 watts of electricity every hour, depending on usage and size. They use energy not only when operating but also substantially more when they are not.

Is running a dishwasher truly less expensive?

Using a dishwasher can help you use less water and electricity to heat it, ultimately costing you less money.

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