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Business Details
50+ Years
experience
Emergency
services
Trusted HVAC Contractors in Worcester, MA
William F Lynch has been a trusted leader in mechanical contracting for over 90 years, serving healthcare, semiconductor, pharmaceutical, industrial, and institutional sectors across Central Massachusetts. Our Worcester-based operations include a main office, pipe fabrication shop, computerized sheet metal facility, and warehouse, supporting comprehensive design-build capabilities. Our in-house teams utilize state-of-the-art CAD systems and 3D laser scanning to coordinate projects from concept to completion. All field employees are licensed craftsmen with five-year accredited apprenticeships, ensuring precision in plumbing, HVAC, and sheet metal work. We maintain proactive safety training and family-owned values while delivering projects on time and under budget.

Our service area spans Worcester County and beyond, with 24/7 emergency response available. We partner with specialty subcontractors for insulation, temperature controls, and air/water balancing while maintaining direct oversight of core mechanical work. Our client list includes major institutions like UMass Medical and Worcester Polytechnic Institute. We combine generational expertise with cutting-edge technology to meet complex mechanical system requirements. This commitment to excellence has established us as one of Central Massachusetts' most financially sound mechanical contractors.
Services
HVAC Installation Plumbing Systems Sheet Metal Fabrication Repairs & Maintenance Design-Build Projects Emergency Services Piping Systems Medical Gas Systems Preventative Maintenance Industrial Contracting
Details
  • Year established: 1925
Highlights and features
  • We offer 90+ years of mechanical contracting experience
  • Our in-house design teams use 3D laser scanning technology
  • We maintain state-of-the-art fabrication facilities
  • All field employees complete 5-year accredited apprenticeships
  • We provide 24/7 emergency service with rapid response
Associations and certifications
  • MSCA STAR
Services
HVAC Systems
Our HVAC expertise covers complete heating, ventilation, and air conditioning systems for commercial and industrial facilities. We install and maintain hot water, condenser, and chilled water systems alongside high/low pressure steam and refrigeration components. Our solutions serve healthcare, education, and pharmaceutical clients requiring precise environmental controls.
Sheet Metal Fabrication
We fabricate custom ductwork in our dedicated sheet metal shop using galvanized steel, stainless steel, aluminum, and PVC. Our capabilities include air conditioning ducts, exhaust systems, clean rooms, and kitchen hoods. This in-house production ensures quality control from material selection through final installation.
Plumbing Systems
Our licensed plumbers handle complex piping systems including domestic water, sanitary waste, natural gas, and specialized medical gases. We serve biotech labs, hospitals, and industrial facilities with process piping for de-ionized water, refrigeration, and high-pressure steam applications.
Emergency Repairs
Our MSCA STAR-certified technicians provide 24-hour emergency response for plumbing, HVAC, and refrigeration issues. The service department operates continuously with licensed professionals ready to address urgent mechanical system failures or maintenance needs.
Design-Build Projects
We offer full design-build solutions using CAD and 3D laser scanning technology. Our teams coordinate with architects and engineers from concept through completion, managing costs while maintaining design integrity for complex mechanical systems in institutional and industrial settings.
Questions
What industries do you specialize in?
We specialize in healthcare, pharmaceutical, technology, industrial, and institutional sectors with expertise in complex mechanical systems.
Do you offer emergency services?
Yes, our MSCA STAR-certified technicians provide 24/7 emergency response for plumbing, HVAC, and refrigeration issues.
Are your technicians licensed?
All field employees are licensed craftsmen who complete five-year accredited apprenticeships in their trade specialties.
What service areas do you cover?
We primarily serve Central Massachusetts including Worcester, Hampden, Middlesex, Norfolk, Suffolk, and Bristol counties.
Do you handle large-scale projects?
Yes, our design-build team coordinates complex projects from concept through completion for major institutions and corporations.
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Reviews (1)
Jason Bailey
Jun 24, 2020 Report
Excellent Mechanical company. Top notch service. Integrity abounds with the staff. I can't say enough.