about pwi

Who We Are

PWI Engineering was established in 1936 as Pennell & Wiltberger,Inc., and has evolved into a professional full-service facilities expert. With over 83 years of continuous practice, we offer a full range of mechanical, electrical, plumbing, and life safety/fire protection design and consulting services for various clients and projects.

We continue to broaden our level of expertise with our Power Designs for Combined Heat and Power and Central Utility Plants. Our engineers, in partnership with our Energy division, provide feasibility studies, modeling, design, and incentives / financial management for your project.

Our client retention over the past twenty years is approximately 90%. We believe that the key to our ability to build long-term professional relationships is our passion to provide expertise in engineering and proven results.

meet the team


Our successes are due not only to a knowledge-based staff but to the leadership and dedication of our Champions.

John McDevitt
Principal, VP
Francis McCarron
Colby Kennedy
Kenneth Deary
Anita Brown
Project Manager
Thomas O’Neill
HVAC Director
William O’Donnell
Plumbing Director
Michael Kopistansky
Director of Energy
Find PWI

Our PWI Locations

New Jersey Office 

10 Melrose Avenue, 
Suite 430
Cherry Hill, New Jersey
Phone: 215-241-9100
Email: info@example.com

Pennsylvania Office 

115 West Avenue, Suite 300
Jenkintown, Pennsylvania 
Phone: 215-241-9100
Email: info@example.com