How to Choose a Commercial Dishwasher for a Busy Hospitality Venue

When a venue outgrows its dishwashing setup, the first signs usually appear during service. Plates begin to stack up, glassware takes longer to return to the bar, and staff wait for clean stock while orders continue to move through the kitchen.

Choosing the right commercial dishwasher is therefore not just an equipment decision. It affects service speed, labour efficiency and the overall flow of your kitchen or bar.

The best place to start is not with a brand name or feature list. Start with your busiest service period. Consider how many items you need to wash, how quickly clean stock must return to use and whether the wash area can support an efficient loading and unloading process.

How Much Dishwasher Capacity Does Your Venue Need?

A commercial dishwasher should be sized for peak demand, not average daily trade.

A venue may have a modest number of covers across the day but still face intense pressure during a short breakfast, lunch or dinner service. If most racks arrive within the same hour, the machine needs enough practical capacity to keep pace.

Before comparing models, estimate:

covers during your busiest service period
the number of racks processed per hour
whether loads arrive steadily or in sudden bursts
the balance of plates, cups, glassware, pans and trays
how quickly clean items need to return to service
whether one or several staff members work in the wash area

This information gives you a more reliable starting point than choosing a dishwasher solely by venue type.

Undercounter Commercial Dishwashers

An undercounter dishwasher can suit cafés, bars and smaller hospitality venues where space is limited and wash volume remains manageable.

These machines sit beneath a bench and offer a compact footprint. They are often a practical choice when the venue mainly washes cups, plates, small utensils or steady loads of lighter ware.

An undercounter model may be suitable when:

bench and floor space are limited
service volume is relatively low or moderate
the machine needs to fit into an existing bench line
wash loads are consistent rather than heavily concentrated
staff do not need to process large pans or bulky trays regularly

The main limitation is sustained throughput. An undercounter machine may complete an individual cycle quickly, but loading, unloading and pre rinsing still take time. During a busy service, those delays can cause racks to build up.

When to Choose a Pass Through Dishwasher

A pass through dishwasher is often a better option for restaurants, clubs, hotels and other venues with heavier or more varied wash loads.

Instead of loading the machine from a low position, staff slide a rack onto the wash bench, lower the hood and move the clean rack towards the unloading area. This can reduce repetitive bending and create a smoother workflow.

A pass through model may be the better choice when:

peak service regularly exceeds the capacity of an undercounter machine
staff wash a mix of plates, pans, trays and kitchen utensils
the venue needs a continuous loading and unloading process
repetitive bending is slowing staff down
the dish area has enough space for dirty and clean landing benches
service pressure regularly creates a backlog

A pass through dishwasher is therefore not only a capacity upgrade. It can also improve ergonomics and reduce unnecessary movement around the dish pit.

When a Conveyor Dishwasher Is More Appropriate

Large hospitality venues, production kitchens, hospitals, hotels and catering operations may need a conveyor dishwasher.

These machines are designed for continuous rack movement and sustained high volume washing. They can process significantly more ware than undercounter or pass through units, but they also require more space, greater utility capacity and a carefully planned workflow.

A conveyor system may be appropriate when:

racks need to move through the wash area continuously
several staff members work in the dishwashing section
demand remains high for extended periods
an undercounter or pass through machine would require constant queuing
the site has enough floor space, power, water and drainage capacity

Conveyor machines should be assessed early in the planning process. They are difficult to add as an afterthought if the kitchen layout and utilities were designed around a smaller machine.

Consider Rack Flow, Not Just Cycle Time

Cycle time is useful, but it does not tell you how many clean racks your team can produce in practice.

Real world output depends on:

how quickly staff scrape and pre rinse items
how efficiently racks are loaded
whether enough racks are available
how long the machine takes to recover between cycles
the mix and condition of the items being washed
the layout of the dirty and clean landing areas
how quickly clean items are removed and returned to service

A fast machine cannot compensate for a poorly planned dish pit.

When comparing models, ask for the practical rack output under normal operating conditions, not only the shortest advertised cycle.

Plan the Dishwashing Area Around Staff Movement

The machine footprint is only one part of the space requirement.

You also need enough room for staff to receive dirty ware, remove food waste, pre rinse items, load racks and unload clean stock without creating crossover points.

Check the available space for:

dirty dish landing areas
clean rack landing areas
a pre rinse unit
waste bins and scraping stations
rack storage
detergent and rinse aid containers
staff movement around the machine
hood clearance above a pass through unit
access for servicing and maintenance

A dishwasher may fit into the available space on paper but still create a daily bottleneck if staff cannot work around it efficiently.

Check Power, Water and Drainage Requirements

Before ordering a commercial dishwasher, confirm that the site can support it.

Different models may require different electrical connections, water conditions and drainage arrangements. Upgrading these services after the machine arrives can delay installation and increase the overall cost.

Ask about:

electrical supply, including 15A or three phase requirements
recommended water pressure
hot or cold water connection requirements
inlet water temperature
drainage height and position
whether a drain pump is required
water hardness
water filtration or softening
ventilation and steam management
detergent and rinse aid dosing systems

Water quality is particularly important. Hard water can contribute to scale build up, reduce wash performance and increase servicing requirements. A suitable water treatment system may protect the machine and improve results.

The Australian Department of Climate Change, Energy, the Environment and Water also advises that using efficient commercial dishwashers and operating them with full loads can reduce both water and energy consumption in commercial kitchens. Choosing the right machine for your venue’s workload can therefore improve long-term operating efficiency as well as cleaning performance.

Do You Need a Separate Commercial Glasswasher?

Bars, pubs, clubs and drinks led venues should consider whether a dedicated glasswasher would improve service.

Glassware often needs different handling from plates and cookware. A dedicated machine can help maintain faster glass turnaround while reducing the risk of grease, food residue or strong detergent affecting the final result.

A commercial glasswasher may be useful when:

glassware makes up a large proportion of the wash load
the bar regularly runs short of clean glasses
glass racks compete with kitchen racks for machine time
presentation and spot free results are a priority
the venue needs quick turnaround during concentrated service periods

In some venues, one general purpose dishwasher is enough. In others, separating glassware from kitchen ware produces a much smoother workflow.

Common Commercial Dishwasher Buying Mistakes

Buying for Average Trade

Average daily covers can hide the true demand placed on the machine. Size the dishwasher around the busiest service period.

Choosing the Smallest Machine That Fits

A compact dishwasher may fit neatly beneath the bench but still be too small for the venue’s wash volume.

Focusing Only on Cycle Time

The shortest cycle does not represent the full time needed to scrape, rinse, load, wash, unload and return items to service.

Ignoring Mixed Loads

Plates may be easy to process, but pans, trays, glasses and kitchen utensils can quickly increase the required capacity.

Overlooking Utilities

A machine that requires electrical, plumbing or drainage upgrades may cost more to install than expected.

Forgetting the Surrounding Workflow

Insufficient bench space, poor rack movement and staff crossover can slow down even a correctly sized machine.

Waiting Until the Existing Machine Fails

Replacing equipment under pressure can limit your options. Review capacity before service problems become critical.

Questions to Ask Before Buying

Before choosing a model, ask your supplier:

What practical rack output can this machine achieve?
Is it suitable for our peak service volume?
What types and sizes of ware can it handle?
What electrical connection does it require?
What water pressure and temperature does it need?
Does the site require water filtration or softening?
Is a drain pump included or required?
What racks and accessories come with the machine?
How much bench and hood clearance is needed?
What servicing, parts and technical support are available?
Would a separate glasswasher improve our workflow?
What are the likely water, power and chemical running costs?

Clear answers to these questions make it easier to compare the total suitability of each machine, not just the purchase price.

Choose the Machine Around Your Busiest Service

The right commercial dishwasher should support the way your venue operates when pressure is highest.

An undercounter model may suit a café, bar or smaller venue with limited space and manageable wash volume. A pass through dishwasher often provides better capacity and workflow for restaurants, clubs and busier kitchens. Larger operations with continuous rack demand may need a conveyor system.

Before ordering, confirm your peak rack volume, available space, electrical supply, water conditions and drainage requirements. It is also worth assessing the full dish pit layout rather than treating the machine as a standalone purchase.

Browse Caterware’s commercial dishwashing range or speak with the team about your service volume, wash load and available utilities. Local buyers can also visit the showroom at 2/6 Resources Court, Molendinar QLD 4214 to discuss suitable options.

Blog