Engineering Design Associates

MEP Engineers

Engineering Design Associates is a full service multi-disciplined consulting engineering firm founded in 2004. EDA originally started out as Patterson, Weber and Associates. PWA was a Mechanical and Electrical Consulting Engineering firm which was formed in 1978 by Harry Patterson and Duane Weber. In 2000, Kevin Schilling assumed ownership, replacing Duane and Harry when they retired. In 2004 the owners decided that it was time to retire the old PWA name and re-organize as Engineering Design Associates. The partners and the remaining professional engineering staff provide over a hundred years of combined design experience in residential, commercial, and industrial engineering.

EDA has a professional staff of 7 including 4 professional engineers licensed in the state of Wyoming, with several maintaining registration in surrounding states in the Rocky Mountain area. Several of our professional engineers have achieved the United States Building Council LEED (Leadership in Energy and Environmental Design) accreditation. Our designs balance environmental responsibility and resource efficiency while striving to maintain occupant comfort.

Engineering Design Associates is a Casper-based consulting firm that specializes in facility construction and renovation design. Through our wide range of experience with facilities across Wyoming, we have developed an extensive understanding of the capability, maintainability and effectiveness of electrical, mechanical and plumbing systems under the state’s unique environmental conditions. We rely on our expertise, first-rate customer service, integrity, professionalism and efficiency to provide our clients with a superior consulting experience.

Recent Projects



Mechanical control systems play an important role in today’s building technology operations and energy management.


Modern technology’s ongoing evolution has fostered an ever-changing and increasingly complex world of electrical engineering design.


As our culture has matured, the need for a plumbing system that can expand or adapt to support those changes has grown more important.