Load Calculation Books

This durable two-sided plastic sizing wheel (or "ductulator") comes with a complete instruction manual for residential and commercial duct sizing procedures. Designed by Hank Rutkowski. Uses: - Sizes metal ducts, lined metal ducts, duct board airways, and

Manual J is the industry standard reside

Manual N gives you a faster way to estimate heating and cooling loads for small and mid-size commercial structures, a simplified version of the procedure in the ASHRAE GRP 158 Load Calculation Manual. Manual N shows you how to use the Cooling Load Tempera