Start to Finish Satisfaction

William F. Lynch is a leading provider of mechanical contracting services throughout Massachusetts. Our  experienced design and mechanical teams are equipped with state-of-the-art equipment and specialize in the healthcare, pharmaceutical, technology, industrial and institutional sectors.

Construction or service, large or small, day or night, William F. Lynch has the expertise and experience to meet your organization’s needs.

Design & Build

Our experienced design teams work with state-of-the-art 3D laser scanning technology, CAD, and robotic laser layout.

Plumbing & Pipefitting

Our trained craftsmen install equipment and piping associated with the mechanical industry.


Heating, ventilation, and air conditioning (HVAC) is a core expertise of William F. Lynch.

Sheet Metal

We fabricate most of our duct work in our own sheet metal shop, which allows us to monitor and control quality from start to finish.

Repairs & Maintenance

Our service department operates 24 hours, 7 days per week to provide plumbing, heating, air-conditioning and refrigeration services on an as-needed basis.

Get in touch to discuss your project or request a quote.