Exploring How Do Dishwashers Heat Water

how do dishwashers heat water

Dishwasher is no longer a strange household appliance for your kitchen. Generally, dishwashers use hot water to run the cleaning process. But do you really know how do dishwashers heat water? Is it right that they make hot water by themselves?

KitchenLowCost writes this article hoping that you can get some helpful knowledge about this aspect.

What is The Role of Hot Water in Dishwasher?

Before exploring how do dishwashers heat water, we want to show you the role of hot water first.

It is undeniable that a dishwasher with a water heater cleans more efficiently than one with cold water.

Frankly, water at a high temperature can easily wash out hard residue and grease from oil on your dishes’ surface.

how do dishwashers heat water

More than that, due to the heat, assists in killing bacteria (if any) on the utensils and disinfecting them effectively. Your plates will be cleaned as well as possible.

In addition, it’s said that detergent inside dishwashers will be able to work best if hot water is about 150 degrees Fahrenheit (approximately 65 degrees Celsius). Therefore, if you let it operate with cold water, detergent can’t serve at its most ability.

Do Dishwashers Heat Their Own Hot Water?

So how do dishwashers heat water? After you select a particular cycle option to start, water is pumped into a pool at the bottom of the dishwasher.

Sensors inside the dishwasher will tell it when the water has reached its limit level. Then the heating element at the bottom (you can see from the below image) will activate, heating the water.

Exploring How Do Dishwashers Heat Water

So the answer is yes, dishwashers do heat their own hot water, with the assistance of a heating system at the bottom part.

For more information, the next stage is the detergent dispenser will be automatically opened at the right time. The machine then will shoot water with spray arms, and start cleaning the plates and utensils.

How do Dishwashers Heat Water?

So how do dishwashers of some brands heat water?

Do Bosch dishwashers heat the water?

how do dishwashers heat water

Bosch dishwashers have their heating element used to heat water.

This element is designed to be at the bottom and it will heat water to a suitable temperature for cleaning.

Bosch’s heating element is designed to be changeable so you can definitely adjust the temperature up to your personal needs.

Besides, Bosch dishwashers also have thermostat monitors allowing them to keep an eye on water temperature, making sure the temperature is at the suited level.

Below are additional functions that can’t be left behind if Bosch dishwashers want to heat water:

  • Sensing System: the sensors are used to specify how much and what kind of dishes, and how much detergent and water should be used.
  • Motor System: motors will take charge of pumping water into and draining water out.
  • Rinsing Sensors: sensors will assess if dishes are clean or still need to be washed again. They also help in regulating water temperature during a cycle.

Do Whirlpool dishwashers heat the water?

Exploring How Do Dishwashers Heat Water

Whirlpool dishwashers also heat their own water. The heating system takes responsibility for heating water up to 140-150 degrees Fahrenheit.

The water of the final rinse will be heated even more in some models with a sanitization cycle as known as the sani-cycle.

Usually, the dishwashers of the Whirlpool brand spend 1.5 to 4 hours running the cleaning process.

Relating to the question of how do dishwasher heat water, we would like to talk a little bit about the average amount of water a dishwasher use.

Generally, a dishwasher consumes 6 gallons of water for one cycle. Some with certification of Energy Star may take 4 gallons per cycle.

Do GE dishwashers heat the water?

Exploring How Do Dishwashers Heat Water

GE dishwashers also have a heating element to heat their own water.

This element is placed under the machine. It ensures to heat water up to 140-150 degrees Fahrenheit.

The final rinse water will be heated even more in some models with a sanitization cycle.

You need to ensure that your GE dishwasher is always connected to a hot water source for the best cleaning performance.

It is important that the input water’s temperature is at least 120 degrees Fahrenheit and not over 150 degrees Fahrenheit.

This dishwasher with Energy Star certification will be a smart option for your house. It is said to be more productive than other regular models. Using its own water heater will be a good way to save water and friendly to your monthly bills.

Do Frigidaire dishwashers heat their own water?

Exploring How Do Dishwashers Heat Water

Like some other dishwashers, Frigidaire also has a heating system to ensure the hot input water for cleaning.

The temperature of the water needs to reach around 140-150 degrees Fahrenheit for optimal performance.

Inside a Frigidaire dishwasher, not the whole area is filled with water.

Water only fills up a small pool at the bottom of the machine. Then the heating element will take charge of heating water to the suited temperature.

Plus, this heating element also supports heating the inside air to dry the plates and utensils.

Do Kenmore dishwashers heat their own water?

Exploring How Do Dishwashers Heat Water

Kenmore is another brand providing dishwashers heating their own water.

So with Kenmore dishwashers, they include a built-in heating system placed at the tub’s bottom.

This element heats water up to 130-140 degrees Fahrenheit and it will keep the water inside the dishwasher still hot even cleaning process is finished.

More than that, in case you don’t have a proper hot water source, Kenmore dishwashers can work as a water heater to do the task and this won’t cause any effect on the cleaning process.

Do KitchenAid dishwashers heat their own water?

how do dishwashers heat water

People also want to know if KitchenAid dishwashers heat their own water or not.

The answer is yes. Like other models, KitchenAid dishwashers also use a heating element to get hot water.

Water after being pumped into the machine will be heated by this system and get ready for dishwashers to do the cleaning.

If you get the dishwasher connected with a hot water source already, the process will be faster.

Hot water will help not only in washing dishes but also in drying them.


Can you run a dishwasher with no hot water?

Besides knowing how do dishwashers heat water, there is one thing people wonder: Can a dishwasher operate with no hot water?

In some unexpected circumstances, the hot water supply may be cut off and your dishwasher doesn’t have hot water power to operate as usual.

However, things will be solved if your dishwasher has a heating system that works effectively, it can heat cold water itself.

In case your dishwasher is of a pretty old-fashioned model and its heating element can’t perform so well, it can still manage to wash the dishes, just not as well as when you have hot water.

Some hard stains or greases will be hard to be 100% wash away. Cleaning will take longer to be done. Yet, operating with cold water causes no serious harm to your machine.

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Hope that you have already found it clear about how do dishwashers heat water after reading this post from KitchenLowCost. Follow us for more interesting articles in the future.