Sheet metal & Air Conditioning Contractors’ National Association


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SMACNA Reference Manual for Labor Units for S/M & HVAC


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This product provides a source of the labor units data required to fabricate and install HVAC materials and equipment. Duct materials of all common types are covered separately for fabrication and installation rates by lb/hr or hour per piece: fittings and accessories are listed separately, as are reinforcements, tie rods and hangers. Lists the national average amount of man-hours required to fabricate or install a given quantity of each item under typically normal conditions on typically normal projects.

An electronic spreadsheet calculates and adjusts the data for specific project types and unique site characteristics that result in projects that are not considered normal. Tables are based on surveys of active sheet metal and air conditioning contractors in the U.S. and Canada, including actual data from numerous projects, along with U.S. government statistics and scholarly reports and journals.

The document provides links to a variety of industry reports and studies on site and project conditions. This file contains macros and a certificate is included from the publisher, SMACNA. When opening, you should check the "always trust macro from this publisher box" and then "enable macros".