Calculate water consumption and total costs for commercial kitchen appliances including dishwashers, steam ovens, combi ovens, kettles, and ice machines. This tool helps identify water-saving opportunities and quantify the true cost of water usage including supply, treatment, and heating.
How It Works
Water Consumption:
Daily Gallons = Cycles/Hours per Day × Gallons per Cycle/Hour
Monthly Gallons = Daily Gallons × 30
Annual Gallons = Daily Gallons × 365Cost Calculation:
Total Cost per Gallon = Water Rate + Filtration Cost + Heating Cost
Daily Cost = Daily Gallons × Total Cost per GallonTypical Water Usage by Appliance:
| Appliance Type | Gallons per Cycle/Hour |
|---|---|
| Commercial Dishwasher | 1.0 – 2.0 gal/cycle |
| Steam Oven (Boilerless) | 1.5 – 3.0 gal/hr |
| Steam Oven (Boiler-based) | 4.0 – 6.0 gal/hr |
| Combi Oven (Steam Mode) | 2.0 – 4.0 gal/hr |
| Steam Kettle/Steamer | 3.0 – 5.0 gal/hr |
| Ice Machine | 0.5 – 2.0 gal/cycle |
Water Consumption:
Daily Gallons = Cycles/Hours per Day × Gallons per Cycle/Hour
Monthly Gallons = Daily Gallons × 30
Annual Gallons = Daily Gallons × 365Cost Calculation:
Total Cost per Gallon = Water Rate + Filtration Cost + Heating Cost
Daily Cost = Daily Gallons × Total Cost per GallonTypical Water Usage by Appliance:
| Appliance Type | Gallons per Cycle/Hour |
|---|---|
| Commercial Dishwasher | 1.0 – 2.0 gal/cycle |
| Steam Oven (Boilerless) | 1.5 – 3.0 gal/hr |
| Steam Oven (Boiler-based) | 4.0 – 6.0 gal/hr |
| Combi Oven (Steam Mode) | 2.0 – 4.0 gal/hr |
| Steam Kettle/Steamer | 3.0 – 5.0 gal/hr |
| Ice Machine | 0.5 – 2.0 gal/cycle |
FAQ
Q: How much water does a commercial dishwasher use?
A: Modern commercial dishwashers use 1.0-2.0 gallons per cycle. Older models can use 3-5 gallons.
Q: What is the largest water user in a commercial kitchen?
A: Dishwashers and steam ovens typically account for 50-70% of total water consumption.
Q: How can I reduce water costs?
A: Install low-flow pre-rinse spray valves, repair leaks promptly, and use water-efficient appliances.
References
- EPA WaterSense — Commercial Kitchen Water Efficiency
- Food Service Technology Center — Water Efficiency Guide
- ASHRAE Handbook — HVAC Applications (Chapter 49: Kitchen Ventilation)
- Local water utility rates and sewer surcharge schedules