Call Now
Website
Call
Business Details
50+ Years
experience
Emergency
services
Trusted Mechanical Contracting Solutions in New England
Established in 1940, TG Gallagher has served as a premier mechanical contractor across New England for over eight decades. Our expertise spans HVAC, plumbing, fire protection, and maintenance services, with a focus on healthcare, higher education, and life science institutions. We prioritize innovation, safety, and client relationships, delivering transformational solutions through our 400+ dedicated employees. Our state-of-the-art 130,000-square-foot prefabrication facility enables efficient, cutting-edge project execution. Safety remains a core value, supported by rigorous training programs and industry-recognized protocols.

We foster a collaborative culture emphasizing employee growth, community engagement, and professional development. Our commitment to excellence extends to partnerships with educational institutions and outreach programs shaping future industry leaders. With $300M+ in annual revenue, we combine multi-generational client relationships with a forward-thinking approach to mechanical contracting. Our work directly impacts communities through life-changing facilities like hospitals and research centers.
Services
HVAC Systems Plumbing Installation Fire Protection Prefabrication Maintenance Services
Details
  • Year established: 1940
Highlights and features
  • We offer 80+ years of specialized mechanical contracting experience in critical infrastructure sectors.
  • Our 130,000-square-foot prefabrication facility enhances project efficiency and precision.
  • We maintain rigorous safety protocols with industry-recognized certifications and awards.
  • Our 24/7 emergency service ensures rapid response for critical mechanical system needs.
  • We combine generational client relationships with cutting-edge technology and training programs.
Associations and certifications
  • AGC MA Safety Award
  • Highwire Gold Safety Award
  • MCAA Safety Award
Services
HVAC Systems
Our comprehensive HVAC solutions cover design, installation, and maintenance for commercial facilities. We specialize in energy-efficient systems that ensure optimal climate control while reducing operational costs. With expertise in complex institutional projects, we deliver reliable temperature management solutions for healthcare and educational facilities.
Plumbing Installation
We execute intricate plumbing projects for new construction and renovations, handling everything from basic water systems to specialized medical gas installations. Our experienced team ensures code compliance and long-term system reliability through precision planning and execution. Decades of experience guarantee efficient water management solutions for large-scale facilities.
Fire Protection
Our fire protection services include system design, installation, and maintenance with strict adherence to safety standards. We implement advanced sprinkler systems, fire alarm integration, and suppression solutions tailored to facility requirements. Regular compliance checks and emergency readiness protocols ensure continuous protection for critical infrastructure.
Prefabrication
Our 130,000-square-foot facility enables off-site fabrication of mechanical components, improving project timelines and quality control. This approach reduces on-site labor while maintaining precision through advanced manufacturing techniques. We handle complex system modules that integrate seamlessly with existing building infrastructure during installation.
Maintenance Services
We provide preventive and corrective maintenance for mechanical systems, ensuring long-term performance and compliance. Our technicians perform regular inspections, repairs, and upgrades to HVAC, plumbing, and fire protection systems. Emergency service teams respond 24/7 to minimize operational disruptions for critical facilities.
People
Shawn Guertin
Chief Operating Officer
Overseeing daily operations, Shawn ensures strategic execution of projects while maintaining TG Gallagher's commitment to quality and client satisfaction through his extensive industry leadership experience.
Chris Foley
Chief Financial Officer
Managing financial strategy, Chris brings expertise in construction finance to maintain fiscal responsibility while supporting growth initiatives and long-term business sustainability.
Chris Evers
Vice President
Leading key business development efforts, Chris focuses on expanding TG Gallagher's market presence while maintaining operational excellence across diverse construction sectors.
Mike Betts
Vice President
Driving project success, Mike leverages decades of mechanical contracting experience to ensure technical precision and client satisfaction in complex institutional projects.
Darren DeSena
Safety Director
As Safety Director, Darren implements comprehensive safety programs that earned TG Gallagher multiple industry awards while fostering a culture of proactive risk management.
Questions
What services does TG Gallagher provide?
We specialize in HVAC systems, plumbing installation, fire protection, and maintenance services for commercial facilities, with expertise in healthcare, education, and life science institutions.
Do you offer emergency services?
Yes, we provide 24/7 emergency response for critical mechanical system issues with our dedicated service team.
What safety certifications do you hold?
We maintain multiple safety awards including AGC MA Safety Award, Highwire Gold Safety Award, and MCAA Safety Award through rigorous training and protocol adherence.
What geographic areas do you serve?
We operate throughout New England, with primary service areas including Massachusetts, Boston, and surrounding commercial hubs.
How do you support employee development?
We offer tuition reimbursement, onboarding programs, safety training, and career advancement opportunities to cultivate industry leadership skills.
Can you handle complex mechanical projects?
Our state-of-the-art prefabrication facility and experienced team enable us to execute even the most intricate mechanical contracting challenges efficiently.