CSI Engineering LLC is home to a team of experienced engineers and support staff with extensive project design and construction administration know-how. Our professionals are esteemed for their excellence in their specific fields. Operating from Portsmouth, located in the heart of Seacoast NH, CSI Engineering is excellently placed to provide comprehensive service to the New England Region. While our central focus remains on New England, our successful project history extends to other states and even overseas.
Services
At CSI Engineering, we're dedicated to designing advanced mechanical systems for the modern building – be it ventilation, heating, equipment analysis, or ductwork installation. We consistently ensure our designs align with state and federal codes and outshine energy-efficiency benchmarks. 
CSI Engineering specializes in crafting exceptional plumbing systems, be it for code compliance, maximizing efficiency, or new construction. We take pride in delivering tailored, energy-efficient systems that always meet regulatory standards, with our clients' needs in mind. 
From reimagining a CT scan lab to constructing a vast 40,000-square-foot special education facility, CSI Engineering collaborates closely with clients. We're dedicated to delivering inventive, efficient, and cutting-edge electrical systems. You can trust our designs to be timely, budget-friendly, and always fit for the intended purpose. 
At CSI Engineering, we produce premium designs and blueprints for fire protection systems in both new and renovated structures. Leveraging the latest in fire protection tech, we offer innovative solutions for projects of all scales. From code reviews to full system redesigns, we ensure your property and people are safeguarded without disrupting daily operations.
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