Sheet Metal Workers Local Union 1 exists to deliver the highest-quality sheet metal craftsmen for the residential, commercial, and industrial HVAC/sheet metal construction and service industry. When you hire a Local 1 union professional, you’re choosing a highly trained craftsperson with the knowledge and skills to deliver top-tier workmanship. When you work with one of our affiliated contractors, you can count on a properly formed, installed, and functioning end product—supported by trained service professionals who maintain and repair systems with integrity.
No matter the scope of the job, our commitment is the same: safe, on-time, and done right the first time.

Local 1 is proud to be active in the broader labor movement and building trades community. We are a member of:
These partnerships support fair wages, safe job sites, and strong communities—while ensuring the next generation of tradespeople has a clear path into a meaningful career.
When you choose Local Union 1, you’re choosing a workforce built on:
Whether you’re building new, upgrading systems, or maintaining what you already have—Local 1 is committed to craftsmanship you can trust.
Established in Peru, Illinois almost 50 years ago, Chapman's Mechanical Systems is a multi-generational family operation that evolved from a sheet metal specialist into a comprehensive mechanical contractor.
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The Second Annual Car Show was back on Saturday, September 13! Friends and family of Local Unon 1 gathered to admire classic and custom cars and enjoyed music and food trucks.
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In October, we came together for our annual Awards Banquet to honor retirees, long-serving members and apprentices. Your hard work and commitment have built a stronger union and a stronger community.
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