DuctCalc: HVAC Ductulator

By Grima Hdez on AppTrack Ninja.

CFM, BTU & Tons Duct Sizing

A ductulator that does the whole job, not just the wheel. SIZE THE DUCT Enter CFM and friction rate, get the required round diameter. Or work the other way: enter a duct you already have and read back the velocity and the friction rate it will run at. RECTANGULAR EQUIVALENTS Every round size comes with its rectangular equivalents, listed by aspect ratio, so you can pick the one that fits the joist bay instead of doing the conversion in your head on a ladder. STOCK SIZES, NOT THEORY A calculator that answers 7.3 inches is a calculator you have to correct. Snap to the sizes the shop actually st…

Categories: Utilities, Productivity

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