Mechanical Contracting Specialists in Heating, Air Conditioning, & Plumbing Services

Founded in 1966, A.T. Chadwick is a Mechanical Contracting firm serving the Delaware Valley Area. For the past 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. 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.







Fully Committed to the Philadelphia Area

Albert “Al” Chadwick has been the driving force behind A.T. Chadwick since he founded the company. A lifelong resident of the Philadelphia, Al has a deep respect and commitment to Philadelphia and to the surrounding Delaware Valley area. This devotion has inspired the growth of A.T. Chadwick along with numerous regional philanthropic endeavors Al is passionate about.

Over the years A.T. Chadwick has been an able partner in the construction of many iconic buildings, many of which have become landmarks of the recognizable Philadelphia skyline. Today the team at A.T. Chadwick continues in that tradition with the new, modern construction taking place, as well as maintaining and retrofitting many of the great buildings of the downtown area.

We’re growing and looking for talented people

Employment Opportunities with A.T. Chadwick

The A.T. Chadwick Team

Commercial Project Management

Rob Gaul
Rob GaulDir. Labor Relations
Tel: 215-245-5800
Brian Kalesse
Brian KalesseProject Manager
Tel: 267-525-1265
Brian O'Kane
Brian O'KaneProject Manager
Tel: 267-525-1290
Mike Graziani
Mike GrazianiProject Manager
Tel: 267-525-1291
Patrick J. Kearney
Patrick J. KearneyProject Manager
Tel: 267-525-1275
Thomas Walls
Thomas WallsProject Manager
Tel: 267-525-1309
George S. Clark
George S. ClarkProject Manager
Tel: 267-525-1366

Estimating & Special Projects

Joseph J. Gerngross, Jr.
Joseph J. Gerngross, Jr.Dir. of Estimating
Tel: 267-525-1267
William Pierce
William PierceEstimator
Tel: 267-525-1329
Ken Voegele
Ken VoegeleEstimator
Tel: 267-525-1334
Jeffrey C. Milano
Jeffrey C. MilanoEstimator
Tel: 267-525-1263
Larry Kishel
Larry KishelEstimator
Tel: 267-245-5800
Mark Patterson
Mark PattersonEstimator
Tel: 267-245-5800
Dave Verna
Dave VernaDir. Construction Tech
Tel: 267-525-1280

Pharmaceutical Division

Mike Maylie
Mike MaylieProject Manager
Tel: 267-245-5800
Team Members
New Buildings
Completed Projects