What is a passthrough dishwasher?

It is a hood-lift dishwasher installed between soiled and washed bench zones so plates and cutlery move in one direction.

When is passthrough the right choice?

Consider it when your current wash area cannot keep up and there is room for an inlet, pre-rinse and unload layout. Compare peak rack demand with the proposed machine's capacity and check the operator's route before choosing.

What should be bought with it?

Plan the benches, pre-rinse tapware, baskets, chemicals and water treatment at the same time as the machine. Check what the exact model includes before adding accessories.

Passthrough Dishwashers Australia | Hood-Type High-Speed Sanitising Systems

Choose a passthrough dishwasher for your busiest service

Start with the racks waiting to be washed at peak service. Record the load mix, available power and space for soiled and clean benches before comparing machines.

Match the rack to the ware

Measure your largest plates, trays and pans. Check both rack dimensions and usable chamber clearance; a rack measurement alone does not confirm that a tall item will fit.

Washtech XM uses 450mm racks. Check this size before planning to reuse existing baskets.
Adler DWA2001 comes with two 500 × 500mm racks and lists 420mm internal clearance. Check the loaded rack height as well as the pan footprint.
Washtech AL8 lists a 500 × 600mm rack and a 700mm wide × 540mm deep × 650mm high wash chamber. Consider these dimensions when comparing larger loads, then confirm the required rack and loading arrangement.

Separate power requirements from cycle times

The Adler DWA2001 is listed at 240V, single phase, 15A and 3.6kW. The Adler DWA2000 is listed at 400V, three phase and 9.8kW. Both list 1, 3 and 4-minute wash cycles; a short programme alone does not tell you which electrical supply is needed.

Have the installer confirm phase, amperage and circuit capacity for the exact model. Ask about rinse recovery under repeated loads before using the shortest cycle to estimate hourly output. Include scraping, pre-rinsing, loading and unloading in your workload plan.

Check the whole installation

Measure the delivery route, machine position and hood clearance when fully open. Allow for inlet and outlet benches, levelling, cleaning and service access. Confirm water supply, drainage and any ventilation requirements against the model's installation documents.

Compliance & engineering standards

A passthrough works only when the cell is laid out correctly:

Hood lift: check shelves, walls and low ceilings before final placement.
Hand movement: staff should not twist back toward soiled items to unload washed ware.
Services: confirm phase, drain height, water treatment and ventilation against the specific unit.

Frequently asked questions

Is a passthrough dishwasher better than an underbench?

Choose by workload and layout. A passthrough suits a wash area with separate inlet and unload benches. An underbench may suit compact batch washing. Compare the exact models' rack capacity, programmes and installation needs before deciding.

Can it wash GN pans?

Check the exact pan, rack and chamber dimensions. GN compatibility is not established by the passthrough format alone. For example, the Adler DWA2001 lists 500 × 500mm racks and 420mm internal clearance; confirm the intended pan and loading arrangement before ordering.

Do I need a softener?

Check your site's water hardness against the exact machine's water-quality requirements. Ask the supplier or installer to specify suitable treatment and confirm whether it is included or purchased separately.

Do I need 3-phase power?

It depends on the model. The Adler DWA2001 lists 240V single-phase power; the DWA2000 lists 400V three-phase power. Both list a one-minute wash programme. Confirm the exact electrical connection and circuit capacity with your installer.

Expert Insights

Technical depth from KW's commercial kitchen specialists.

Summary: Is a Passthrough Dishwasher Right for You?

Choose around the complete wash area: peak rack demand, ware size, site services and room for soiled and clean benches. Compare underbench and conveyor options if the proposed hood layout cannot meet those needs.

The hood-cell test

Stand where the operator will stand. The feed direction, spray position and unload surface should feel natural before the unit is purchased. Operator detail: lift-height clearance must be measured with the hood fully open, not from the closed cabinet height.

Mistakes in passthrough installs

No unload surface: staff put washed ware on the nearest bench and break the hygiene flow.
Spray arm on the awkward side: the operator crosses hands or turns repeatedly.
Wrong upgrade path: a site with constant banquet volume may need conveyor dishwashing instead.

Complete the cell

Buy inlet and outlet benches, pre-rinse tapware, baskets, detergent, rinse aid and water treatment with the machine. Use an underbench dishwasher where the venue needs compact batch washing rather than a hood cell.