Design Master HVAC is an AutoCAD-based duct design program. It is a complete design tool, the company states, encompassing load calculations, duct and diffuser layouts, duct sizing, and double-line and 3-D drafting. Features include sections, diffuser schedules, and duct pressure calculations.

Design Master Software Inc., 20300 19th Ave N.E., Shoreline, WA 98155; 866-516-9497 or 206-364-3343; (website).

eProduct #181