Commercial Laundry Utility Cost Calculator
Determine water consumption in gallons per pound, boiler natural gas therms, electric dryer power, and total utility cost per pound of linen processed.
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How Commercial Laundry Utility Costs Are Calculated
Commercial laundries spend 12% to 20% of their operating budget on utilities. Water and natural gas dominate cost per pound:
Water Cost = (Linen Lbs × Gal/Lb × Water & Sewer Rate per 1,000 Gal) / 1,000
Water Heating Gas = (Lbs Hot Water × ΔT × 1.0 BTU/lb/°F) / Boiler Efficiency (80%)
Dryer Evaporation Gas = Water Removed (Lbs) × 1,800 BTU/lb evaporated
Total Utility Cost / Lb = (Water $ + Gas $ + Electric $) / Total Linen Lbs
Tunnel Washer Efficiency: Continuous Batch Tunnel Washers (CBW) counter-flow rinse water backward into the wash zone, slashing water consumption from 2.5 gal/lb down to 0.6 gal/lb, cutting natural gas heating loads by 65%.
Frequently Asked Questions
What is the benchmark water consumption for commercial laundry equipment?
Standard washer-extractors consume 2.2 to 2.8 gallons per pound of linen. Washer-extractors fitted with water reclaim systems drop to 1.2 to 1.5 gal/lb. Industrial tunnel washers operate at 0.5 to 0.8 gal/lb of linen.
How much water does a towel retain after high-speed centrifugal extraction?
High-extract washers pulling 350 to 450 G-force leave approximately 45% to 50% residual moisture retention in terry towels (0.5 lbs of water per 1.0 lb of dry cotton). Lower extract machines (100 G-force) leave 75% to 85% moisture, nearly doubling tumbler dryer gas consumption.
What water temperature is required to kill bacteria in healthcare linens?
CDC guidelines and healthcare accreditation standards require washing healthcare textiles with hot water at a minimum of 160°F (71°C) for at least 25 minutes, or 140°F (60°C) with chlorine bleach maintaining 50 to 150 ppm free available chlorine.