High-temperature dishwashers are generally more expensive than regular dishwashers. In some cases, however, high-temperature dishwashers are less expensive in the long term because their use is less likely to damage flatware and plastics.
Regular dishwashers, also called low-temperature dishwashers, use more water and require the weekly purchase of chemicals. Those expenses, coupled with other expenses of owning a low-temperature dishwasher, typically do not exceed the costs of owning a high-temperature dishwasher. However, because flatware and plastics are more likely to be damaged in regular dishwashers, the cost of replacing those items may add up. A dishwasher should have a life cycle of about 10 years.