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50+ Years
experience
Emergency
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Innovative Mechanical Contracting Solutions in New England
Founded in 1940, TG Gallagher has established itself as a premier mechanical contractor in New England, delivering innovative solutions for HVAC, plumbing, and fire protection systems. Our 80+ years of industry leadership are built on a foundation of safety, client relationships, and transformative projects across healthcare, higher education, and life science institutions. With over 400 dedicated employees and a $300M+ annual revenue, we combine decades of expertise with cutting-edge prefabrication technology to exceed client expectations.

Our culture prioritizes collaboration, employee development, and community engagement, ensuring every project aligns with our core values of integrity and excellence. From emergency services to complex installations, we remain committed to pushing boundaries while maintaining the highest safety standards, as evidenced by our industry awards and rigorous training programs. This unwavering dedication positions us as a trusted partner for clients seeking reliable, innovative mechanical contracting solutions.
Services
HVAC Systems Plumbing Installation Fire Protection Prefabrication Services BIM Modeling
Details
  • Year established: 1940
Highlights and features
  • We offer 24/7 emergency service for critical mechanical needs.
  • Our 80+ years of experience span complex healthcare and life science projects.
  • We operate a 130,000 SF state-of-the-art prefabrication facility.
  • Our safety program has earned multiple industry awards.
  • We serve diverse sectors including healthcare, education, and life sciences.
What people say
Exceptional project execution Reliable emergency response Strong safety commitment Innovative solutions Dedicated team
Services
HVAC Systems
Our HVAC expertise covers complete system design, installation, and maintenance for commercial facilities. We specialize in energy-efficient solutions that reduce operational costs while maintaining optimal indoor environments. Clients benefit from our experienced technicians and 24/7 emergency service capabilities.
Plumbing Installation
We handle complex plumbing projects from initial design through final installation. Our team manages both standard and specialized piping systems for commercial and institutional buildings. Decades of experience ensure compliance with all safety and regulatory requirements during every project phase.
Fire Protection
Our fire protection services include system design, installation, and maintenance for commercial properties. We ensure compliance with current safety standards while maintaining system readiness through regular inspections and testing protocols.
Prefabrication Services
Our 130,000 SF fabrication facility enables off-site construction of mechanical components. This approach improves quality control, reduces on-site labor requirements, and accelerates project timelines while maintaining strict safety standards.
BIM Modeling
We utilize Building Information Modeling for precise system planning and coordination. This technology enhances project visualization, reduces conflicts during construction, and improves overall project efficiency through digital simulation and analysis.
People
Shawn Guertin
Chief Operating Officer
Shawn oversees daily operations and strategic growth initiatives. With extensive industry experience, he ensures operational excellence across all projects while maintaining client relationships and company values.
Chris Foley
Chief Financial Officer
Chris manages financial strategy and corporate development. He brings financial expertise to support the company's growth objectives while maintaining fiscal responsibility and long-term sustainability.
Chris Evers
Vice President
Chris leads key business development efforts and project management teams. His leadership focuses on expanding service offerings while maintaining the company's commitment to quality and client satisfaction.
Mike Betts
Vice President
Mike directs operational strategy and project execution. He ensures alignment between client needs and company capabilities while fostering innovation in mechanical contracting solutions.
Brian Delorey
VP of Planning and Preconstruction
Brian oversees project planning and preconstruction services. He focuses on early-phase collaboration with clients to develop efficient, cost-effective solutions that meet project goals.
Questions
What services does TG Gallagher provide?
We specialize in HVAC systems, plumbing installation, fire protection, prefabrication services, and BIM modeling for commercial facilities.
Which industries do you serve?
We primarily serve healthcare institutions, higher education campuses, and life science facilities across New England.
Do you offer emergency services?
Yes, we provide 24/7 emergency service for critical mechanical system needs.
What safety certifications do you hold?
Our safety program includes regular training, hazard analysis, and compliance with OSHA standards, earning multiple industry awards.
How does your prefabrication process work?
Our 130,000 SF facility enables efficient prefabrication of mechanical components, reducing on-site labor and improving project timelines.
Can I apply for career opportunities?
Yes, we offer careers in mechanical contracting with professional development programs and a collaborative workplace culture.