Door-Type vs. Conveyor Warewashing — Capacity, Cost, Footprint
Door-type warewashers wash one rack per batch and suit kitchens with spiky, moderate volume; conveyor and flight-type machines run racks continuously and suit high, steady throughput. For most pot-and-pan loads under ~30 racks/hour, a door-type machine is the lower-cost, smaller-footprint choice.
How each class works
A door-type machine is a single chamber: load, close, run, unload. A conveyor machine pulls racks through separate wash and rinse zones on a moving track, so it never stops between racks. The conveyor wins on sustained throughput but costs far more and needs a much larger footprint, a longer staffing line and more complex maintenance.
Capacity crossover
Below roughly 30 racks/hour, a door-type machine like the CE-UWL keeps up comfortably. Above that — large flight kitchens, big institutional cafeterias, high-volume central kitchens — a conveyor earns its cost. Buying a conveyor for a 25-rack/hour load wastes capital and floor space; buying a single door machine for a true 60-rack/hour line creates a bottleneck.
Cost and footprint
Door-type machines occupy around 1 m² and cost a fraction of a conveyor line. The CE-UWL’s 1030 × 895 mm footprint fits into kitchens where a conveyor simply will not, and installs on a single power and plumbing point rather than a multi-zone line.
When several door machines beat one conveyor
For peak-driven kitchens, a fleet of identical door machines can outperform one conveyor: capacity scales with the number of units, one unit can be serviced without stopping the others, and a single parts kit covers them all. Airline catering and event kitchens often run two or three door units in parallel for exactly this reason.
How to choose between them
Take your sustained busiest-hour rack count. Under ~30 racks/hour, a door machine is almost always the right call. From ~30–50, weigh a small fleet of door machines against one conveyor on cost, footprint and redundancy. Above ~50 sustained racks/hour, a conveyor is usually justified. Match the class to your real throughput curve, not your aspiration.
- Door-type = batch, lower cost, smaller footprint.
- Conveyor = continuous, high capacity, high cost.
- Under ~30 racks/hour, door-type is usually the right call.
- A fleet of door machines can beat one conveyor on redundancy and cost.