Selecting the wrong dishwasher capacity creates either constant bottlenecks or wasted investment. Match the machine to your real peak demand.
Capacity Categories
- Undercounter dishwashers: Typically 30–40 racks per hour. Suitable for small restaurants, cafés, bars, and lower-volume outlets. Compact footprint.
- Hood-type dishwashers: Commonly 50–100+ racks per hour. The standard choice for most medium to large restaurants. Good balance of speed and space.
- Conveyor or flight-type: 150 racks per hour and above. Designed for hotels, large banquets, central kitchens, and very high-volume operations.
How to Calculate Your Need
Estimate peak-hour covers. Multiply by the average number of racks required per cover (plates, glasses, cutlery). Add a buffer for glassware and unexpected rushes. Also consider turnaround time—staff must be able to load and unload without the machine becoming the constraint.
Other Important Factors
Water consumption, energy use (look for heat-recovery models), rinse temperature for hygiene, and ease of cleaning. Hard water requires treatment to protect the machine and maintain results. Total cost of ownership includes detergent, energy, water, and maintenance—not just the purchase price.
Photo by MART PRODUCTION on Pexels.
Frequently Asked Questions
What size do most independent restaurants need?
A good hood-type machine covers the majority of medium restaurants.
Is an undercounter enough for a 60-seat restaurant?
Often yes if the menu and glassware volume are moderate, but calculate peak racks carefully.
How much does water quality affect performance?
Significantly. Scale buildup reduces efficiency and increases breakdowns.