Engineering Guide

Equations & Definitions

Basic Fan Concepts
Fan Laws, Fan Performance, and Motor Full Load Amps

Ventilation
Design Methods and Acceptable Rate for Indoor Air Quality

Fan Troubleshooting Guide

Miscellaneous
Sheet Metal Weights, Recommended Metal Gauges for Ducts, Fuel Comparisons, Heat Loss Estimates, Estimated Seasonal Efficiencies of Heating Systems, and Annual Fuel Use