Commercial Hot Water Demand

Calculate hot water demand for commercial buildings based on occupancy type and fixture loads.

1=office, 2=restaurant, 3=hotel, 4=hospital, 5=school.
Number of people, seats, or beds.
Hours of peak demand per day.
hours

Results

Peak Demand-GPM
Peak Hour Demand-gallons
Recommended Storage-gallons
References: Based on ASHRAE Applications Handbook Ch. 50 and ASPE DHW design criteria