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In addition to basic wash cycles,
more expensive models add special cycles for pots and pans,
china and crystal, and presoaking.
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Smaller, draw-size dishwashers can
be used at the same time to wash different types of items. For
instance, china
and crystal in one and pots in the other.
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High-end models automatically
choose the correct wash cycle based on variables such how dirty
the dishes are, the time since the last wash, or
how many times the dishwasher door has been opened.
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Stationary racks are standard on
basic models. More expensive models have racks that are adjustable and
removable for easier loading.
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A model with an internal water heater lets you
save energy by reducing the setting of your home's water heater
while ensuring 140-degree F water for dishwashing.
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Two-stage filters and self-cleaning
filters can minimize food particles being re-deposited on
cleaned dishes.
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Some models have a built-in food disposer
that grinds larger food particles before they reach the
filter.
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Stainless-steel tub linings will
outlast plastic or enameled tubs, which are more likely to
crack.
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A delayed-start feature lets the
washing cycle begin when electricity rates are lower.
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If noise is a concern, look for a
dishwasher with a lot of insulation in the door and around the
cavity. That insulation helps absorb the sound as well as
keeping the water inside hot during the cycle.
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Consider how a dishwasher will
look in your kitchen. Many models allow you to change the front
panel to better match the décor, even if you change cabinetry or
colors at a later date.
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