With a team of highly skilled engineers and support staff, CSI Engineering LLC brings decades of project design and construction administration experience to the table. Our professionals are known for their excellence in their fields. Headquartered in Portsmouth, at the core of Seacoast NH, CSI Engineering is fully prepared to cater to the New England Region. While our main focus remains on New England, we have a track record of completing projects in other states and on an international scale. 
Services
When it comes to mechanical systems, CSI Engineering takes the lead in crafting integrated, efficient, and advanced solutions for buildings. Our expertise ranges from ventilation and heating to equipment analysis and ductwork installation. Always abiding by state and federal codes, we ensure our designs exceed energy efficiency standards. 
At CSI Engineering, our mission is to design top-tier plumbing systems – whether for code compliance, enhanced efficiency, or construction projects. Always keeping our clients at the forefront, we deliver energy-efficient, custom systems that meet all standards. 
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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