Our High Standards
CSI Engineering is an MEP/FP (mechanical, electrical, plumbing, fire protection) engineering design firm in Portsmouth, New Hampshire. Since 1996, we have provided exceptional service to our clients in New England and beyond, helping them achieve their design goals. Our firm’s previous design work includes redesigning and improving structures throughout New Hampshire, Massachusetts, Maine, Connecticut, Rhode Island, and Vermont. CSI Engineering’s capabilities also extend to the rest of the United States and even internationally. Regardless of the location, our firm is dedicated and ready to assist. Our firm’s three principal engineers serve client needs directly, providing expertise backed by decades of experience.
We lend our services to industries and projects both big and small. We often serve government bodies, architects and school districts, and we work to continually expand our practice by lending our expertise to plan, draft and redesign essential building systems. With every client, we want to do more than design — we strive to establish lasting personal relationships, getting to know each client’s individual needs so we can serve them better.
With every design, we strive for timeliness while keeping plans within budget and buildable in the real world. Our MEP engineering firm has industry certifications and maintains membership in multiple national engineering organizations, allowing us to serve clients with superior industry knowledge to suit even the most complex projects. With our MEP design services, we’ll create efficient and cutting-edge systems for your business. Whether that means renovating existing plans or starting from scratch, we’ll make it work for you.
Industries
FEATURED INDUSTRY
- Academic
- Animal Clinics
- Auto Dealers
- Breweries
- Corporate
- Growing/Cultivation/ Dispensary Facilities
- Health Care
- Historic Buildings
- Labs
- Military Facilities
- Municipal Facilities
- Recreational Facilities
- Religious Facilities
- Residential and Hospitality
- Restaurants and Entertainment
- Retail and Commercial
- Technology and Manufacturing
Accreditations
Client Testimonials
Unrivaled Engineering & Design Expertise
The construction background of our principals provides a unique perspective in the industry unlike any other engineering firm. The principals of the company are also working engineers and are involved in every project.
Meet Our Experts
37
YEARS OF EXPERIENCE
John E. Cass
Principal and Founder
A graduate of Wentworth Institute of Technology (BSME, Mech Eng) John has over 37 years of experience in HVAC/Mechanical Engineering.
33
YEARS OF EXPERIENCE
Jim O’Brien
Principal, Chief Electrical Engineer
Wentworth Institute of Technology graduate (Master Electrician) with over 33 years of experience.
10
YEARS OF EXPERIENCE
Jason Churches
Principal, Mechanical Engineer
Graduated from the University of Massachusetts Lowell, BS, Mechanical Engineering Technology Professional Engineer licensed in ME, MA, NH. Mechanical Design Engineer with 10 years of mechanical design experience.