Wendes Systems has been a fixture of commercial HVAC estimating since 1978, when Herb Wendes published his original HVAC Sheet Metal Estimating Manual. The WenDuct software covers all aspects of commercial and industrial sheet-metal estimating with on-screen takeoff from digital drawings, digitizer integration, automatic scaling, 2D takeoff, CAD file integration, and a conversion calculator. WenPipe provides specification-driven mechanical estimating that automatically selects item size, pipe, valves, fittings, flange, and hanger type for fast, accurate takeoff on plumbing and HVAC piping jobs.
The differentiator is the underlying labor and material cost database. Wendes' data is grounded in 22 years of productivity studies directly from Herb Wendes, giving sheet-metal and mechanical contractors an unusually credible, field-tested baseline for labor hours. The suite also includes Excel integration, an updated cost database, visual assemblies, and a proposal generator, so estimators can go from plans to a completed bid and client-facing proposal inside one environment.
Wendes is a premium, desktop-centric tool used by established commercial HVAC, sheet-metal, and mechanical contractors rather than residential replacement shops. WenDuct pricing starts around $3,500 with total costs (including implementation) typically running in the $5,000+ range. The company offers a free web demo, a 30-day trial with included training and setup, and multiple training formats (documentation, live online, and in-person) to get new estimators productive on the tool.