Static Pressure Calculator
External Static Pressure (ESP) is a primary data point when selecting a fan for HVAC applications. It is the measurement of all the resistance in the duct system that the fan must work against. The ESP calculator can be used to estimate static pressure losses for your fan and the associated ductwork. Please note that the calculator uses assumptions based on the inputs provided by the user. Consult with an engineer for precise calculations.
Ductwork
Dampers/Air Terminals
Total Head Loss (in of WC):
Total (with 25% safety):
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Note to user:
The ESP calculator can be used to approximate the static pressure losses based on your inputs. Estimated losses per a given length of ductwork have been considered based on best engineering practices. Ensure that you input the data correctly to avoid calculation errors. Damper and air terminal losses have been considered based on actual submittal data. Please note the calculator provides an estimated value and is not precise.