How Many Amps Does a Dishwasher Use? A Comprehensive Guide.

A typical dishwasher uses 9-12 amps of current during its operation. Dishwashers are a common household appliance that help make life easier in the kitchen.

They are designed to save time and effort by eliminating the need for manual dishwashing. While they come in different sizes, designs, and features, they all perform the same basic function of washing dishes. However, there’s more to dishwashers than just their convenience.

One important factor to consider before purchasing a dishwasher is the amount of energy it uses. The amount of amps a dishwasher uses can affect your energy bills, and it’s important to know the amount of energy your dishwasher will consume before making your decision. In this article, we’ll explore how many amps a dishwasher uses and what factors can affect its energy consumption.

How Many Amps Does a Dishwasher Use? A Comprehensive Guide.


Understanding The Basics Of Amps And Electrical Consumption

Electricity powers almost everything in our homes, and dishwashers are no exception. But have you ever wondered how many amps your dishwasher uses? Understanding the basics of amps and electrical consumption can help you determine if your dishwasher is using too much power and impacting your bills.

What Are Amps, And How Do They Work?

Amps, short for amperes, measure the electric current flowing through a circuit. One amp is equal to one coulomb of electric charge, passing through a conductor per second. In simpler terms, amps refer to the amount of electrical power that an appliance needs to operate.

Here are some key points to keep in mind about amps:

  • The higher the amps that an appliance requires, the more power it consumes, which can increase your electricity bills.
  • Electrical circuits have a specific amp rating, which determines the maximum amount of power that can be safely drawn through it.
  • Appliances should be rated to match the circuit amperage to prevent overloading the circuit and damaging the appliance.
  • Dishwashers typically use between 10-15 amps of electrical power to function effectively.

How Does Electricity Consumption Impact Your Bills?

The more power an appliance uses, the higher your electricity bills will be. It’s essential to understand how electricity consumption impacts your bills to make informed decisions about your energy usage and decrease your bills.

Here are some things to keep in mind about electricity consumption:

  • Electricity consumption refers to the amount of energy that an appliance requires to operate.
  • The cost of electricity is calculated based on the number of kilowatt-hours (kwh) of electricity that you use each month.
  • One kwh is equal to the energy consumption of a 1,000 watt appliance that is used for one hour.
  • Lowering your energy consumption can help reduce your electricity bills and benefit the environment.

Understanding amps and electrical consumption can help you determine if your dishwasher is using too much power and increase your electricity bills. By keeping these principles in mind, you can make informed decisions about your energy usage and decrease your bills.

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Remember that small changes like turning off appliances when not in use, choosing energy-efficient appliances, and reducing overall energy consumption can make a big difference in your monthly bills.

Factors Affecting The Amp Usage Of A Dishwasher

Dishwasher Size And Capacity

The size of a dishwasher greatly affects its amp usage. A larger dishwasher with a higher capacity requires more electricity to function compared to a smaller one with a lower capacity. Typically, a dishwasher’s size is measured in terms of how many place settings it can hold.

For instance, a dishwasher with a 12-place setting capacity will use more energy compared to a dishwasher with a 6-place setting capacity.

Moreover, a larger dishwasher would also require more water to run, resulting in longer wash cycles, which in turn, would consume more power. Therefore, choosing the right dishwasher size according to your daily usage can help you save on electricity in the long run.

Type Of Dishwasher (Portable Vs. Built-In)

Another factor that significantly impacts the amp usage of a dishwasher is its type: portable or built-in. Portable dishwashers tend to use more electricity because they come with additional features, such as wheels and a handle, for easy movement around the kitchen.

The wheels and the handles increase the overall weight of the dishwasher, consequently leading to higher power consumption.

On the other hand, built-in dishwashers are heavier than their portable counterparts but consume less electricity. The reason being, they are securely installed in your kitchen cabinet, and their weight is evenly distributed over the flooring.

Therefore, when looking for a dishwasher that consumes less power, consider purchasing a built-in model that doesn’t have any additional features.

Energy Efficiency Rating

Whenever shopping for an electrical appliance, especially a dishwasher, always look for the energy efficiency rating (eer). The rating is typically indicated on the manufacturer’s label and ranges from a+++ (most energy-efficient) to g (least energy-efficient). The eer essentially indicates the amount of energy required to run a dishwasher effectively.

A dishwasher with a higher eer could be slightly expensive than one with a lower eer but will save significant energy costs in the long run. Therefore, when purchasing a dishwasher, ensure you check the eer to make an informed decision and purchase a model that is the most energy-efficient.

Wash Cycle Selection

The wash cycle selection of a dishwasher plays a significant role in the appliance’s amp usage. Dishwashers come with different wash cycle options such as “eco,” “quick,” “heavy,” and “normal. ” each wash cycle has a different power consumption rate, depending on the water temperature and duration.

For instance, the “eco” wash cycle is the most energy-efficient among the wash cycle selection options since it uses less water and takes a shorter time to complete. This cycle consumes the least power, making it a better choice when looking to save on electricity costs.

On the other hand, the “heavy” wash cycle uses more water and requires more time to complete, leading to higher energy costs. Therefore, when selecting the wash cycle option, choose one that is best suited for the specific dishes being cleaned, while being mindful of the cost implications.

Amp Ratings Of Different Dishwasher Models

Standard Size Dishwashers

One of the most common types of dishwashers is the standard size. These dishwashers are designed to fit in a designated space in your kitchen and have a capacity of around 12 to 14 place settings.

  • Amp ratings for standard size dishwashers typically range from 7. 5 to 13 amps.
  • Most standard size dishwashers require a 120-volt circuit.
  • Some newer models may have a lower amp rating due to energy-efficient designs.
  • Always double-check the manufacturer’s specifications and read the label on the dishwasher to determine the exact amp rating.
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Portable Dishwashers

Portable dishwashers are a great option if you don’t have a designated spot for a dishwasher in your kitchen. You can easily roll them to a sink and connect them to a water source and outlet.

  • Amp ratings for portable dishwashers are similar to that of standard size dishwashers, ranging from 7. 5 to 13 amps.
  • Most portable dishwashers also require a 120-volt circuit, just like standard size dishwashers.
  • Portable dishwashers come in different sizes, so it’s important to check the manufacturer’s specifications to determine the exact amp rating for the model you’re interested in.

Energy Star Rated Dishwashers

Energy star rated dishwashers are designed to be more energy-efficient, which can save you money on your electricity bill.

  • Energy star rated dishwashers use less water and energy than traditional models, which means they have a lower amp rating.
  • Amp ratings for energy star rated dishwashers typically range from 5. 5 to 9 amps.
  • Energy star rated dishwashers often have a higher upfront cost, but can save you money in the long run by reducing your energy consumption.

High-End Dishwasher Models

If you’re looking for a top-of-the-line dishwasher, high-end models may be a good option. These dishwashers often come with advanced features and a sleek design.

  • High-end dishwasher models often have a higher amp rating due to their advanced features and larger capacity.
  • Amp ratings for high-end dishwasher models can vary widely, but typically range from 10 to 20 amps.
  • Some high-end models may require a higher voltage circuit than 120 volts, so be sure to check the manufacturer’s specifications before purchasing.

Remember to always check the manufacturer’s specifications and label on the dishwasher to determine its exact amp rating. By understanding the amp ratings for different dishwasher models, you can choose the best option for your kitchen and ensure you have the correct electrical hookup.

Measuring Dishwasher Amp Usage

Dishwashers have become an essential part of modern-day kitchens. However, they tend to consume a lot of energy. Therefore, it is crucial to understand how much energy your dishwasher uses, so you can manage your electricity bills in the long run.

We will discuss how to measure dishwasher amp usage to find out its energy consumption.

Installing A Watt-Meter

A watt-meter is an electrical device that measures the amount of electricity consumption of a particular appliance or device.

  • Purchase a watt-meter suitable for your dishwasher. You can find watt-meters at your local hardware store or online.
  • Find an appropriate location to install the watt-meter. It would be best to select an area along the dishwasher’s circuit path to track its energy consumption.
  • Follow the watt-meter’s instructions to install it correctly.
  • Connect the dishwasher to the watt-meter, and turn it on.
  • The watt-meter will display the amount of energy consumed by your dishwasher in watts. You can then convert watts to amps using an online converter or the formula amps = watts/volts.

Using An Ammeter To Measure Amp Usage

An ammeter is a device that measures the current flowing through a circuit.

  • Ensure that your dishwasher is unplugged from the power source.
  • Open the dishwasher’s electrical panel by removing the screws on the cover.
  • Locate the wires that connect to the dishwasher’s motor or heating element.
  • Use a wire stripper to remove some insulation from one of the wires.
  • Connect the ammeter to the same wire.
  • Turn on the dishwasher.
  • The ammeter will show the amount of current flowing through the wire in amps.
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Measuring your dishwasher’s amp usage helps you understand how much energy it consumes, allowing you to manage your electricity bills and reduce your carbon footprint. By following the steps mentioned above, you can quickly and accurately measure your dishwasher’s amp usage, helping you make informed decisions about your energy consumption.

Tips To Reduce The Amp Usage Of Your Dishwasher

Dishwashers are a primary appliance in most households, and it is essential to know the amount of amps it consumes while in use. The question that frequently arises is, how many amps does a dishwasher use? The average dishwasher usually consumes between 9-12 amps.

However, several factors can increase or decrease its power consumption. Some of the critical factors that affect the electrical consumption of a dishwasher are load size, cycle selection, and age of the appliance. Let’s discuss some tips that will help you reduce the amp usage of your dishwasher.

Use Energy-Saving Modes

Most modern dishwashers have an energy-saving mode that helps reduce the electrical consumption when in use. This mode is generally found in the settings of a dishwasher and assists in reducing power usage. This mode reduces the number of amps consumed, thereby reducing the load on the electrical supply.

It is advisable to use this mode whenever possible to help save energy and reduce power consumption.

Optimize Your Wash Cycle Selection

Dishwashers offer several wash cycles that have different purposes. Some cycles are designed to handle heavy-duty cleaning, while others require less power to function. It is essential to optimize the wash cycle selection to help reduce the electrical consumption of the dishwasher.

Always choose a cycle that matches your load’s dirt level to ensure effective cleaning and low power consumption. Additionally, consider choosing a cycle with a shorter run time, as longer cycles tend to consume more electricity.

Run The Dishwasher At Full Capacity

Running your dishwasher at full capacity can help reduce the number of times you run it in a week. This translates into lower electrical consumption over time. Suppose you do not have enough items to fill it up entirely, consider handwashing instead.

Over time, making a conscious effort to run your dishwasher at full capacity will help save energy and reduce amp usage significantly.

Opt For An Energy-Efficient Dishwasher Model

If you are in the market for a new dishwasher, consider purchasing an energy-efficient model. These appliances are designed to use fewer amps, which translates to savings on your electric bill. When shopping for an energy-efficient dishwasher, look for models that meet energy star standards.

These models have been tested and certified to be energy efficient and offer significant savings on electricity usage over time.

By implementing these energy-saving tips, you will be able to reduce the amp usage of your dishwasher and save money on your electricity bill. Remember, every small step counts when it comes to reducing energy consumption; let’s do our part in saving the planet.


Knowing how many amps your dishwasher uses can help you understand the amount of energy consumed by your appliances, which ultimately translates to energy bills. In most households, dishwashers are essential appliances that save time and effort. The answer to the question “how many amps does a dishwasher use?

” varies based on the make, model, and size of the dishwasher. However, on average, dishwashers consume between 7 and 15 amps of electricity. While shopping for a dishwasher, it is important to consider the energy rating to help reduce your household’s carbon footprint.

Additionally, it’s advisable to adopt energy-efficient habits, such as running full loads, using energy-saving modes, and cleaning the dishwasher regularly. By following these tips, you can save money, conserve energy, and keep your dishwasher in good condition.