- Airtech Mechanical Services., Overland Park, Kansas
- Air Systems Balancing & Testing Service Inc., Rochester, New York
- Bledsoe Environmental LLC, Indianapolis, Indiana
- Breffni Air
- Ireland Unlimited, Ireland
- Crosby-Brownlie, Liverpool, New York
- Downing Heating Inc., Hope, Michigan
- Integra Testing Solutions of New England, Norwell, Massachusetts
- John W. Danforth Co., Syracuse, New York
- Keith Panel, Burnaby, British Columbia
- Progressive Roofing Inc., Buffalo, New York
- Rieck Services., Dayton, Ohio
- Sanks Mechanical, Philadelphia, Pennsylvania
- Verify Inc., Toronto, Ontario, Canada