- 1902 Metal Works Oklahoma City, OK
- Airflow Mechanical, Coquitlam, BC
- Air-Ops LLC, Lewiston, ID
- Bay Area Mechanical, Santa Clara, CA
- Ceroni Mechanical Inc., Cherry Valley, IL
- CK Industries Inc., Beaverton, OR
- J. Grunau Metal Works Ltd., Port Coquitlam, BC
- J.T. Mauro Sheetmetal LLC, Rochester, NY
- North Shore Climate Control Inc., Bohemia, NY
- Rocky Mechanical, Pueblo, CO
- United Mechanical, Louisville, KY