Business Details
30 Years
experience
Expert MEP/FP Engineering Services in Portsmouth, NH
Founded in 1996, CSI Engineering has established itself as a premier MEP/FP engineering design firm serving New England and beyond. Our three principal engineers, with decades of hands-on experience, lead every project directly, ensuring technical excellence and client satisfaction. We specialize in mechanical, electrical, plumbing, and fire protection engineering, with expertise in historic building preservation and LEED-certified projects. Our team's construction background provides unique insights into real-world buildability challenges. We maintain active memberships in national engineering organizations to stay at the forefront of industry standards. With offices in Portsmouth, NH, we serve clients across the United States and internationally. Our commitment to timeliness, budget adherence, and personalized service has earned us long-standing client relationships. We approach each project with a focus on innovative solutions that balance efficiency with practical implementation. Our engineers hold professional licenses in multiple states, demonstrating our regional and national capabilities. Through continuous improvement and technical rigor, we deliver engineering solutions that meet the evolving needs of modern infrastructure.
Services
HVAC Design
Electrical Design
Plumbing Design
Fire Protection Design
LEED Consulting
Historic Building Engineering
Energy Efficiency Analysis
Code Compliance Review
System Retrofit Design
Construction Administration
Served areas
- New Hampshire, Massachusetts, Maine, Vermont, Connecticut, Rhode Island, New England, United States
Details
- Year established: 1996
- Employees: 16
- Licensed
- Insured
Highlights and features
- We have over 25 years of experience in MEP/FP engineering design
- Our principal engineers are directly involved in every project
- Specialized expertise in historic building preservation projects
- We provide custom engineering solutions tailored to specific project needs
- Our team conducts on-site evaluations for accurate system assessments
Associations and certifications
- LEED Accredited Professionals
Payment methods
- Checks
- Bank transfers
What people say
Great team
Never miss deadlines
Responsive consultants
Expert knowledge
Reliable partner
Services
HVAC Design
Our HVAC design services create energy-efficient heating, ventilation, and air conditioning systems for commercial and residential buildings. We specialize in clean room environments, laboratory ventilation, and historic building retrofits. Our engineers optimize ductwork distribution and equipment selection to ensure comfort while meeting strict energy codes. With over 38 years of combined experience, our team delivers solutions that balance performance with budgetary constraints.
Electrical Design
We provide comprehensive electrical design for power distribution, emergency systems, and lighting solutions. Our services include EV charging station design and specialized systems for arenas, auditoriums, and historic structures. Our LEED-accredited engineers focus on creating reliable electrical infrastructure that meets current and future needs while maintaining code compliance across all project types.
Plumbing Design
Our plumbing engineering covers domestic water systems, medical gas piping, and industrial waste management. We design efficient layouts for residential and commercial applications while ensuring code compliance. Our team specializes in water conservation strategies and complex system retrofits, with expertise in acid waste neutralization and fertigation systems for specialized facilities.
Fire Protection Design
We design fire suppression and alarm systems for diverse facilities including aircraft hangars, computer rooms, and historic buildings. Our services include sprinkler system design, hydraulic calculations, and code analysis. Our engineers create customized fire protection solutions that integrate seamlessly with building systems while ensuring occupant safety and regulatory compliance.
LEED Consulting
As LEED-accredited professionals, we guide clients through sustainable design certification processes. Our services include energy modeling, sustainability assessments, and compliance strategies for new construction and renovations. We help achieve environmental goals while optimizing building performance and operational efficiency through proven green building practices.
People
John E. Cass
Principal and Founder
With 39 years of experience, John founded CSI Engineering in 1996. A graduate of Wentworth Institute of Technology with a BSME, he specializes in HVAC/mechanical engineering and oversees all mechanical design projects.
Jim O'Brien
Principal, Chief Electrical Engineer
Jim brings 35 years of electrical engineering expertise to CSI. A LEED-accredited professional and Wentworth Institute graduate, he manages all electrical design projects and complex power system analyses.
Jason Churches
Principal, Mechanical Engineer
Jason has 16 years of mechanical design experience. Licensed in ME, MA, and NH, he specializes in commercial HVAC systems and mechanical design for challenging building environments.
Domenic Ciolino
Fire Protection Engineer
With 23 years of fire protection experience, Domenic specializes in suppression system design. He graduated from UMASS Lowell with a civil engineering degree and focuses on complex fire safety solutions.
Eric Pflugradt
Plumbing Designer
Eric has 26 years of plumbing design expertise. A University of Maine graduate, he specializes in commercial and institutional plumbing systems with a focus on code compliance and efficiency.
Questions
What engineering services does CSI Engineering offer?
We provide mechanical, electrical, plumbing, and fire protection engineering design services, along with LEED consulting for sustainable building projects.
Do you work on historic building projects?
Yes, we specialize in historic preservation with engineers who have decades of experience adapting modern systems to historic structures while maintaining architectural integrity.
Are your engineers licensed professionals?
All principal engineers hold professional licenses in multiple states, including NH, MA, and ME, with specialized certifications in LEED and fire protection engineering.
What geographic areas do you serve?
While based in Portsmouth, NH, we serve all New England states and have completed projects throughout the United States and internationally.
Can you handle complex commercial projects?
Our team has extensive experience with complex commercial systems including hospitals, laboratories, breweries, and historic renovations across diverse industries.
How do you ensure code compliance?
We conduct thorough code analysis for all projects, staying current with evolving regulations to ensure designs meet or exceed all local and national building standards.
Reviews (1)
Sob
Aug 15, 2023
Report
CSI Engineering is very professional and when you call they answer the phone. They answer questions in a timely fashion and super knowledgeable about Engineering services they provide. 5 Stars!!