Yes bosch dishwashers have a inline water heater that is the only way they can reach the sanitation temperature.
Dishwasher with internal water heater.
Heat encourages moisture to evaporate leaving your dishes nice and dry.
This chamber can quickly heat water up to 161 degrees.
Some dishwashers do not have built in water heaters they pull water directly from the source so whatever temperature water happens to be circulating in the kitchen is the water that gets used to clean the dishes.
Washing with cold water may be the culprit behind unclean dishes or undissolved detergent pods.
Incidentally this means that there are no top rack restrictions in such a dishwasher anything can go anywhere.
If you wash a load of dishes on the heated setting the heating element will warm the unit s internal temperature to assist in drying.
Need entering water of a minimum of 120 degree f.
The bottom line is if you re using electric heating elements to heat water the one in your dishwasher is just as 100 efficient at doing that as the one in your water heater and heating it in the dishwasher eliminates the need to pump that water through pipes to get to the dishwasher where much of that heat would be lost in addition to negating the need to waste water trying to get hot water to your tap.
They will use an in line heater.
When the water pumps into the dishwasher it travels through a heating chamber and small heat coils.
The built in rinse agent dispenser helps to minimize water spotting on dishes while an internal water heater and the heavy wash cycle eliminate germs and bacteria by boosting water temperature up to 149 degrees fahrenheit.
Bosch s system is much more efficient.
Other brands typically have a heating element that sits in the bottom of the machine and waits for water to hit it and warm.
The small basin at the base of the dishwasher heats the already hot water to 140 f or thereabouts.
Some brands like bosch will not have an exposed heating element.
Yes they do have a heating element in the bottom of the tub that will continue to heat the water up to approximately 140 145 degrees f during the main wash and sometimes during the final rinse as well.
They don t have the ridiculous exposed heating element for drying like many american models do.
The large majority of dishwashers used in the u s.
From there the water is pushed up into jets that spray the water out with heavy pressure.
The water is what sprays onto the dishes with the bonus that the jets often rotate like a sprinkler.