Commercial Dishwashers

Buying Guide

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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 dishwasher is critical.

High and Low Temp Dishwashers

When it comes to picking a dishwashing machine, it's important to know whether you will need a high temperature or low temperature unit. Both machines require detergent and rinsing chemicals to complete the cleaning process, but they differ in how they work.

High temp machines wash dishware at 150 to 160 degrees and rinse it at 180 degrees Fahrenheit, sanitizing through the sheer heat of the water. Because of the intense heat, high temperature units also require a condensate hood for operation. These hoods are excellent additions to high temp units, but they also add to the initial cost and footprint, which can make them difficult to place. However, dishes coming out of a high temp unit often dry faster and don't use sanitizers, some of which harm certain dishware materials.

The alternative is to use a low temp machine, which both washes and rinses at temperatures between 120 and 140 degrees Fahrenheit. Because these temperatures are not high enough to sanitize by themselves, low temperature machines must use chemical sanitizing agents with the water. The cost of sanitizers is ongoing with low temp machines, but the units as a whole are easier to place in your business since they may not require a hood (check with your local authority). However, you have to be careful when purchasing a sanitizer since some can tarnish or harm certain dishware materials.

Conveyor Dishwashers

Conveyor dish washers are large, cumbersome, and powerful, able to process between 350 to 1000 racks every day. These dish 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, these units require a trained electrician to hard-wire them.

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.

These dishwashers can typically process between 30 to 350 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 are still too large and pull too much electricity to run off a simple plug, so they will often have to be hard-wired by an electrician as well.

Undercounter 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 racks of glasses and dishes at a time, giving your business a steady supply of clean dinnerware throughout your business hours.

Most washers 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.

Warewashing Chemicals

When you're working with low temp machines, it's vital to use machine dishwashing chemicals to ensure proper cleaning with every use. These chemicals enable your dishwasher to sanitize and clean dishes at temperatures that won't naturally sanitize your dishware. When you shop for the proper chemicals, you should look for a chemical that will work with both your dishwasher and the dishware you're cleaning.

For example, certain washers may only accept powder, liquid, or solid detergent, and some metal products are made with materials that wear after washing because they require a metal safe detergent. While there are multiple brands you can choose, Noble Chemical supplies some of the most effective and affordable dishwashing chemicals in the industry, helping to cut down on your cost while keeping your business up to code.

Booster Heaters

Depending on the temperature of your dishwash machine water, you may need an electric or gas booster heater to properly complete your final rinse cycle. Luckily, we carry a wide range of Hatco booster heaters to provide the final rinse water required to sanitize and flash-dry dishes and flatware. These boosters ensure that water is hot enough to meet sanitation codes.

A booster is not required for low temp machines as long as they run at 120 degrees Fahrenheit or higher. In the case of high temp machines, a booster is not required if they run at 180 degrees Fahrenheit or higher. Check the settings on your dish machine to see if your temperature is hot enough for a sanitary final rinse. If not, it's time to invest in a booster heater! On top of rinsing, they instantly air dry dishes and flatware to save time, space, and money! Many of our Hatco models our compact enough to install right next to your dishwasher.

Our booster heaters come equipped with temperature / pressure relief valves and gauges, a high temperature limit control, pilot indicator light, on-off switch, and a low water cut -off to prevent element burnout due to low water conditions. Standard tanks are designed for a working pressure of 150 psi (equivalent to "pounds per square inch" pressure). Each booster heater has fiberglass insulation to minimize heat loss. This means that the heaters take less time and energy to warm up when needed for your final dish rinse cycles.

The benefits of a booster machine are clear:

- 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