Mechanical Contracting Specialists


Enhancing Philadelphia & Surrounding Areas Since 1966

What a majestic and architecturally inclusive skyline! Philadelphia has some of the most iconic buildings in the U.S., And it should; it was the birthplace of America, after all.

From the historically significant Independence Hall to the incredible splendor of the Philadelphia Museum of Art, the Comcast Center to the neoclassical 30th Street Station, and let’s not leave out One Liberty Place, Philadelphia has a stunning skyline.

Let’s also not overlook the fact that A.T. Chadwick had a supporting role in much of the building of the iconic Philadephia skyline. From the high-rise, residential dwellings, shopping, and laboratories, to the corporate headquarters, A.T. Chadwick has lent its experience and expertise in the construction or renovation of many of these buildings.

A.T. Chadwick is a Mechanical Contracting firm serving the Delaware Valley Area. For over 50 years, A.T. Chadwick has crafted an organization committed to clients, employees and the community.

And speaking about virtual reality in design, enjoy this video.

We Are Guided by Five Core Values

For over 50 years, A.T. Chadwick has crafted an organization committed to clients, employees and the community. This commitment is guided by our five core values.

  • We pride ourselves on the highest level of workmanship in the industry, delivering quality to every client we serve.

  • We honor our financial commitment to every partner and every project.

  • We do the right things, and do them right.

  • Our collective commitment to integrity and service guides not only our relationships with our clients and each other, but is also reflected in our work with every project completed.

  • We stand behind our work, and believe that the foundation of our business is governed by our continued commitment to these values and our clients.


An Active Partnership for Everyone’s Success

Our pride lies in all of the relationships fostered over the years, with architects, construction companies, building managers, management companies, and many others who choose to have A.T. Chadwick as their partner. Whether it’s safely renovating or upgrading an existing building or leveraging our 3D/Virtual design capabilities in the construction of a completely new structure, A.T. Chadwick continues to be on the forefront of mechanical contracting, just as we have been since 1966.

And while no other firm in our space offers the blend of experience and up to date design processes that we do, our clients come back to us with their projects because of the relationships we have forged together. And the shared success, too.



A.T. Chadwick is Always Looking to the Future

At A.T. Chadwick, our team is looking to the future with the adoption of building information modeling software in the design and cost projection phase of our projects. Using a model-based method for planning, designing, constructing, and managing buildings and infrastructure supports multidiscipline design collaboration.

Our CAD design team uses Revit® to drive efficiency and accuracy across the project lifecycle, from conceptual design, visualization, and analysis to fabrication and construction. Modeling in 3D offers higher accuracy and more precision.

We can automatically update floor plans, elevations, and sections with the evolution of your model. And, our Mechanical CAD Department has years of CAD engineering expertise and works in the realm of virtual 3D design every day.

“We have changed every single thing, especially with the introduction of Revit. It gave us a renewal, raising the bar for all in the division. From the use of standing desks, to state of the art computers, we have brought the department to the most modern and up to date anywhere.” – David Verna, Director of Construction Technology

Some of Our Projects

Read about some of our recent projects and local philanthropic efforts.

Our HVAC retrofit was completed on a timely basis and more than met our expectations. We highly recommend the pro’s at A.T. Chadwick.

Fred M., Updyke Construction

A.T. Chadwick provides excellent support, listens to their customers & continually works to enhance their knowledge. If you have a significant project involving high-rise plumbing or A/C, ventilation, or heating, speak with A.T. Chadwick and get the project done properly.

Jeffrey T., Lasko Contractors

It’s always refreshing to work with people of such professionalism and talent.

Bill I., CinematicEye
Go to Top