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Pioneering Mechanical Solutions.
The TG Gallagher Legacy.

As the premier mechanical contractor in New England, TG Gallagher stands as a beacon of innovation, safety, and lasting impact. We bring over eight decades of industry leadership to the table, specializing in HVAC, plumbing, fire protection, and maintenance services. Our steadfast commitment to excellence enables our clients to enact meaningful change, improving lives within their respective communities.

By the numbers

Paper scoll icon1940Year Founded
icon of a construction team400+Dedicated Employees
Building construction icon$250M+Annual Revenue
Safety vest emergency services icon24/7 Emergency Service
Two men writing at construction site, wearing hard hats and safety gear

A Heritage of Client Relationships and Transformational Solutions

TG Gallagher is synonymous with multi-generational client relationships and has a proven track record of undertaking complex challenges. Our reputation for delivering top-tier solutions extends across diverse sectors throughout New England. Our philosophy resides in a deep-rooted respect and integrity for all relationships – our clients, employees, subcontractors, and community partners. When we commit to a project, we do so with the ambition of not just meeting but exceeding expectations – because doing the right thing is not just an option, it’s our standard.

Warehouse full of equipment

Innovating Beyond Boundaries with Our State-of-the-Art Prefabrication Facility

Our drive for innovation manifests itself through our state-of-the-art 70,000-square-foot prefabrication facility. Staffed by a team of experienced professionals, we excel even in the face of the most complex mechanical challenges. By leveraging this space, we are always ahead of the curve, ensuring your project benefits from the highest level of expertise, efficiency, and technology.

Employee working on a pipe in safety gear

Safety First – Upholding the Highest Standards

At TGG, safety remains a core value in all aspects of our work. We stay at the forefront of industry best practices, building on our protocols and providing comprehensive safety training to our employees in order to maintain a safe working environment.

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Group of employees in facility, wearing protection goggles

A Culture of Collaboration, Growth, and Excellence

Our culture propels who we are as an industry innovator. We foster a collaborative environment where employees work together, share ideas, and support each other in achieving common goals. We place an emphasis on our employees’ development and professional growth through training programs, continuing education, and performance management. Our employees are encouraged to give back to the community through company events that support charitable organizations. At the end of the day, we aim to foster a culture that prioritizes teamwork, innovation, and a commitment to excellence.

Tom McClaughlin headshot

My favorite part about working at TG Gallagher is the camaraderie you build with coworkers and clients. We are all working towards the same goal and cultivating positive relationships with the stakeholders in our projects. It is both fun and rewarding at the end of the project when we reach the finish line as a team.

Tom McLaughlinSenior Project Manager
Photo of Arianna Sanders

At TG Gallagher, I have an amazing support system of foremen, superintendents, and coworkers who are always willing to help when needed. I always have opportunities to learn more each day and to carry that knowledge into each project.

Arianna SandersProject Manager
Kelly Knox headshot

The various personalities and perspectives combined with the hard working and creative nature of the office staff and our field members keeps me motivated. Also, it's rewarding knowing that the projects TGG takes on makes a difference to so many people in our local communities.

Kelly KnoxTalent Support Specialist

Industry Affiliations

We frequently partner with industry peers within the New England and Greater Boston Plumbing Contractors Association to help develop and implement tools to create a culture that promotes a diverse workforce.
We support events and participate in panels/discussions held by Professional Women in Construction to advocate for the training and advancement of women in our industry.

Take the Next Step with TGG

Why settle for ordinary when you can have extraordinary? We are committed to pushing the boundaries of excellence in every project. Leverage our decades of experience and innovation to make your next venture a resounding success.

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