Because no two projects are the same, contractors need an accurate source for the labor units data required to fabricate and install HVAC materials and equipment. They will find the newly updated "SMACNA Reference Manual for Labor Units for Sheet Metal and HVAC" an invaluable resource.

Especially useful for change orders, the “SMACNA Reference Manual for Labor Units for Sheet Metal and HVAC" helps the contractor educate the customer on why the price is what it is. The spreadsheet helps walk the customer through the project, letting them know the circumstances encountered and identifies changing conditions that may affect the project labor factors. It will help to justify the labor costs on each specific change order.

Published in 2010, the comprehensive document lists the national average amount of man-hours required to fabricate and/or install a given quantity of each item under project specific conditions ranging from "normal" to "very difficult" and contains spreadsheets that adjust data for different projects.

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