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Types of Commercial Dishwashers

Choosing the Best Commercial Dishwasher

Keeping your dishes and glasses clean is essential to the life of your business. Cleaning your soiled wares is a major success or failure point for health inspectors, and it can make or break your establishment's reputation. If you want to make sure your business continues to grow and abide by federal, state, and local laws, choosing the correct commercial dishwasher is critical.

Types of Commercial Dishwashers

There are many styles of commercial dishwashers that cater to all different kinds of establishments. It is important to take into consideration a few different factors before selecting a dishwasher, including volume and allotted space. This section will help you determine which dishwasher makes the most sense for your business.
Noble conveyor dishwasher

Conveyor Dishwashers

Conveyor dish washers are large, cumbersome, and powerful, able to process between 350 to 1000 dish and flatware racks every day. These commercial ware-washing machines are made of stainless steel and designed for heavy use in cafeterias, hospitals, and other high-volume operations. Many come with microprocessors and easy controls to set washing conditions, and there are also Energy Star models to help cut down on electricity consumption, and they are made in both high temp and low temp models. But because they're so powerful, a conveyor commercial dishwasher requires a trained electrician to hard-wire them.

Noble rack dish washer

Door Type / Rack Dishwashers

Door type or rack dishwashers are smaller versions of conveyor washers that are designed to connect to clean dishtables or dirty dishtables. The idea is to fill up a compatible rack full of dishes, push it inside the dishwasher, close the door, and run the cleaning cycle. Within moments, you can push the door back up and your dishware is cleaned.

A commercial ware washer can typically process between 30 to 350 dish and flatware racks every day, making them great for localized operations like mom-and-pop restaurants. And like the conveyor models, you can also find these with high and low temp designs. Because they're not as large as conveyor dishwashers, rack washers are designed to sit out of the way of your kitchen's traffic, usually in a corner or against a wall. However, many still pull too much electricity to run off a simple plug and should be installed by an electrician as well.

Noble undercounter dish washer

Undercounter Commercial Dishwashers

Undercounter dishwashers are an excellent equipment choice for compact kitchens or bars where you can clean as you go, but not at a rapid pace. They can clean 20 to 30 dish and flatware racks at a time, giving your business a steady supply of clean dinnerware throughout your business hours.

Most commercial warewashing equipment of this type use a single door on the front and resemble residential washing units, but they can incorporate a variety of controls and displays to let you work more efficiently. You can find them in high and low temp styles, and since they fit right under your countertop, these dishwashers are the most convenient when used in the front of the house, minimizing the distance and time required to get clean dinnerware back to your customers.

Commercial Dishwasher Temperature Requirements

The FDA requires food contact surfaces to reach a surface temperature of 160 degrees Fahrenheit to be considered sanitary. Not all dishwashers reach temperatures that can accommodate this requirement, so it is important to pay attention to unit specifications that outline temperature potential.

How Hot Do Dishwashers Get?

Dishwasher water temperature can range anywhere from 120 - 180 degrees Fahrenheit depending on the model and which cleaning cycle they are running.

High and Low Temp Dishwashers

noble high temp dish washer
High temp machines
  • Wash dishware at 150 to 160 degrees and rinse it at 180 degrees Fahrenheit
  • Sanitizes through intense water heat
  • Require a condensate hood
  • Faster drying
  • Great for visibly soiled dishes and fat / grease


Low temp machines
  • Wash and rinse at temperatures between 120 and 140 degrees Fahrenheit
  • Require chemical sanitizing agents
  • Dishes must be scrubbed before using the machine
  • May not require hoods (check with your local authority)
  • Low energy requirement

Booster Heaters

booster heater

Benefits of a Booster Heater:

  • Units effectively remove food residue and provide rapid self-drying and sparkling clean dishware
  • Units ensure that the final rinse water temperature is hot enough (120 or above for low temp, 180 or above for high temp)
  • Compact models fit right next to your dishwasher
  • Units are insulated to minimize heat loss, saving energy and time
  • Cleaning a Commercial Dishwasher

    It is important to regularly clean your dishwasher to ensure that your soiled wares are getting thoroughly clean. Grease and food remnants can build up quickly and act as a hindrance for your machine to function as it should. Be sure to refer to your dishwasher's manual or care and maintenance guide for instructions on proper cleaning.

    Warewashing Chemicals

    Noble Chemical dry it low rinse
  • Vital for low temp machines
  • Help sanitize and clean at temperatures that don't naturally occur in your dishwasher
  • Find a chemical that will work with both your unit and your dishware
  • Types include powder, liquid, solid, and metal safe
  • Check out Noble Chemical dishwashing chemicals for an effective and affordable option
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