One of New England’s oldest and largest mechanical contractors, you can depend on William M. Collins for the highest quality fire protection, plumbing, process piping, and HVAC systems.

We have been based in the Boston area since 1927 and have operated under the same family ownership since 1964. Through the years, we have successfully collaborated with and developed strong working relationships with many of the region’s most respected general contractors, businesses, municipalities, and manufacturers.

Our systems can be found in high-profile projects throughout the area, including biomedical and pharmaceutical research facilities, colleges and universities, hospitals, water and wastewater treatment plants, and other commercial and industrial sites. Our work runs the gamut and has included systems and piping of enormous size and scope. As a result, we can confidently tackle your project, regardless of its scale or complexity.

When you work with us, you can count on reliability, efficiency, and integrity backed by many decades of experience.

Comm. of Mass. corporate plumbing license: #2564
Comm. of Mass. sprinkler contractor license: #SC001367