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Greenheck Fan Law Calculator and Ductulator

Greenheck Fan Law Calculator gives you the capability to quickly determine new flow rates when performance changes need to be done to an existing unit. Simply input the existing specifications for rpm, cfm, static pressure, and horse power. Next input the desired performance (cfm or rpm) and the remaining values will automatically calculate using standard fan laws.

What's New in the Latest Version 3.0

Last updated on Jan 16, 2016 Enhancements:
• Help icon added; help text added
• Ability to calculate sound values
• Only 2 inputs for the old values are now required for the program to calculate.
• Input values will be saved until the app is closed.
• Keypad defaults to numbers only and decimal point.
• On tablets, app will display in full screen
Updates:
• Corrected horsepower calculation error.
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