Commercial Dishwasher Buying Guide: Find the Right Fit for Your Kitchen

The right commercial dishwasher should match your restaurant’s dish volume, space, and sanitizing needs. Choose between high-temperature and low-temperature systems, compare their types and features, and balance cost with efficiency to ensure reliable cleaning performance and long-term operational savings.

Choosing the right commercial dishwasher can significantly enhance kitchen efficiency, allowing staff to maintain peak service levels while ensuring quality is not compromised. For restaurant owners, this means faster table turnover, lower labour requirements, reduced energy bills, and reliable compliance with health codes. 

By selecting a unit that matches your volume, layout, and workflow, you can cut long-term costs while maintaining consistent cleaning standards. Read along to find the right commercial dishwasher for your business.

What Is a Commercial Dishwasher? 

A commercial dishwasher is a heavy-duty appliance designed for fast, high-volume dishwashing in professional kitchens. Unlike residential models, it cleans and sanitizes large quantities of dishes, cutlery, and cookware using higher-than-average dishwasher temperatures and chemical solutions to meet health codes. 

Found in restaurants, hotels, and institutional kitchens, commercial dishwashers run multiple cycles per hour, washing hundreds to thousands of items and reaching rinse temperatures of up to 180°F (82 °C), ensuring quick and hygienic results. With multiple formats available, they’re built to match the demands and layout of any foodservice operation.

Types of Dishwashers for Restaurants 

There are four common types of restaurant dishwashers: undercounter, door-type, conveyor, and specialty machines for glassware or cookware. 

Undercounter Dishwashers 

Compact and energy-efficient, undercounter dishwashers resemble residential models but are designed for light-duty commercial use. Ideal for cafés, bars, and small kitchens with up to 50 seats, they typically handle 30-35 racks per hour or around 750 dishes. Designed to fit under standard countertops, they’re a smart solution for limited spaces and modest dish volumes.

Door-Type Dishwashers 

Door-type dishwashers, also known as hood or pass-through models, are a popular choice in mid-sized commercial kitchens with 51 to 75 seats. They process 40-175 racks per hour with cycle times under a minute. Upright and space-efficient, they fit between clean and dirty tables and may include built-in steam condensers to reduce ventilation needs.

Conveyor Dishwashers 

Conveyor dishwashers are industrial-grade flight-type machines built for high-volume foodservice operations with 75 to 125 seats. Using a belt or rack system, they move dishes through multiple cleaning stages and process over 200 racks per hour. Efficient and consistent, they support fast-paced kitchens where speed and sanitation are essential.

Glass Washers & Pot Washers 

Glass and pot washers are specialty dishwashers designed for specific cleaning needs in bars, prep areas, and high-use cookware stations. Glass washers process 50 to 2,000 glasses per hour at lower temperatures, while pot washers use higher pressure for bulky cookware. These units are ideal supplements for kitchens that frequently handle delicate glassware or oversized items.

Image Source: Canva

How to Choose a Commercial Dishwasher? 

From service volume to kitchen layout, every detail matters when choosing a commercial dishwasher. Consider the listed factors to compare models, plan for operating costs, and choose a brand with proven reliability.

Match Dishwasher Type to Daily Volume 

Estimate the number of dishes your kitchen handles each day. Seating capacity and service volume will help determine the right machine. 

Smaller operations, such as cafés and bars, often use undercounter models, while mid-sized and high-output kitchens may require door-type, conveyor, or other industrial dishwasher units. Consider peak service times, where faster cycle speeds or higher rack-per-hour (RPH) ratings can improve efficiency and prevent delays.

Plan Around Your Kitchen Layout 

Dishwasher selection should reflect not only your volume but your kitchen’s physical layout. Measure the available space carefully, taking into account the unit’s dimensions, height clearance, and any required ventilation or drainage connections. 

Some models work best with straight-through dish flow, while others can be installed in corner setups to save space. Planning your layout to facilitate a smooth transition from dirty to clean zones will help maintain hygiene and efficiency.

Compare Purchase Price and Operating Costs 

Price varies widely depending on the machine’s size, features, and temperature type. 

• Undercounter models typically range from $3,000 to $5,000 

• Door-type machines usually cost anywhere from $4,000 to $7,000

• Conveyor dishwashers can start at $10,000 or more.

• However, it’s essential to consider long-term ownership costs. This includes water and energy use, detergent and rinse aid, maintenance, and staff training. While conveyor models have a higher upfront cost, they can often pay off in busy kitchens through labour savings and faster turnaround.

Choose a Trusted Brand 

Durability and service support are just as important as specs. Brands like Hobart are widely respected for their long-lasting construction and range of models. Jackson machines are known for their smart features and energy efficiency, while Champion Moyer Diebel specializes in high-performance conveyor and flight systems designed for institutional and high-output use. s.t.o.p. Restaurant Supply carries all three, with models available for kitchens of every size.

Image Source: Canva

High-Temp vs. Low-Temp Dishwashers 

One of the most important decisions when purchasing a commercial dishwasher is whether to opt for a high-temperature or low-temperature model. Each type has its pros and cons depending on your space, volume, and sanitization standards.

What Is a High-Temperature Dishwasher? 

A high-temp commercial dishwasher uses an internal booster heater to raise water temperature to 82°C (180°F) during the final rinse. This high heat kills bacteria without the need for chemical sanitizers and also helps dishes dry faster. Many kitchens prefer this option for its strong sanitizing properties and reduced chemical handling.

What Is a Low-Temperature Dishwasher? 

A low-temp commercial dishwasher operates between 49°C and 60°C (120°F to 140°F) and relies on chemical sanitizers to meet health regulations. These units use less energy and are often less expensive upfront; however, they require ongoing chemical supply and may have longer drying times.

Additional Features in Commercial Dishwashers 

Beyond basic cleaning and sanitizing, many commercial dishwashers also offer features that improve efficiency, reduce manual labour, and deliver more consistent results during busy shifts.

Key features to look for include:

• Energy Star certification to lower water and power usage

• Smart wash cycles that adjust to soil levels for better performance

• Built-in booster heaters for high-temperature sanitization

• Self-cleaning filters to simplify daily maintenance

• Automated detergent and rinse aid dosing for consistent chemical use

Best Commercial Dishwasher Brands 

Some of the best commercial dishwasher brands include Hobart, Jackson, and Champion Moyer Diebel. From the compact Moyer Diebel 501LT to high-performance models like the Champion Door Type DH6000T with heat recovery, each brand offers dependable options for different kitchen sizes and dishwashing needs. 

👉 Explore more models by visiting the full commercial dishwasher collection.

Tips to Maximize Dishwasher Efficiency 

For optimal cleaning performance, longer equipment lifespan, and a smoother daily workflow, it’s essential to follow the manufacturer's guidelines and industry-backed maintenance routines. The following daily practices can help keep your dishwasher operating at its best:

Pre-Rinse Strategically 

Always scrape food off dishes and give them a quick rinse before loading. Avoid over-rinsing, which wastes water and time. A pre-rinse sprayer helps speed up the process without soaking items or clogging the dishwasher with excess food waste.

Don’t Overload Racks 

Ensure every dish has enough space so the spray arms can clean effectively. Overloading racks leads to poor wash results and more rework. Allow items sufficient time for proper rinsing to minimize drying issues and prevent strain on your machine.

Clean Filters Daily 

Dirty filters block water flow and reduce cleaning power. Make it a routine to clean the filters at the end of each shift. Keeping them clear helps maintain performance, prevents odours, and avoids buildup that can damage your equipment.

Train and Monitor Staff 

Proper training and active supervision are essential for maintaining consistent dishwasher performance. Teach staff how to load racks, choose the right settings, and perform routine maintenance. Follow up regularly to ensure procedures are being followed and make corrections as needed.

Frequently Asked Questions 

Key Takeaways 

• Choose a dishwasher based on your kitchen’s size, volume, and workflow

• High-temp models deliver stronger sanitization; low-temp units reduce energy use

• Trusted brands include Hobart, Champion, and Jackson

• Don’t overlook long-term costs like water, energy, chemicals, and maintenance

• s.t.o.p. Restaurant Supply offers reliable, expertly vetted commercial dishwashers

Find the Right Commercial Dishwashers at s.t.o.p. Restaurant Supply 

Not sure which model is right for your kitchen? Our team can help. Browse the latest restaurant and industrial dishwashers at s.t.o.p Restaurant Supply or contact us for expert guidance tailored to your space, volume, and workflow.