💨 Natural vs Forced / Induced Draft (Static Pressure Inches Water Column " WC)

Boiler Draft & Fan Static Pressure Calculator

Model combustion air draft and exhaust stack static pressure under AMCA standards: calculate required Forced Draft (FD) fan static pressure (Inches Water Column " WC overcoming burner register and boiler pass resistance) and Induced Draft (ID) fan negative furnace draft (-0.10" WC preventing hot flue gas casing leaks), and fan contractor margins.

1. Project & Operating Inputs

Fan Airflow Capacity (CFM e.g. 18,500 CFM Flue Gas Fan)

Total System Static Pressure Drop (" WC e.g. 6.5" Water Column ΔP)

Customer Bid Price for Supplied & Connected Industrial Draft Fan ($)

High-Temp Centrifugal Fan, Variable Speed VFD Motor, Vibration Base ($)

2. Financial Breakdown & Yield

BOILER FORCED & INDUCED DRAFT

Turnkey Draft Fan Skid Profit

Boiler Mechanical Fan Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost