Insights

Comprehensive Service CSI Engineering offers a broad consulting portfolio across HVAC, Electrical, Plumbing, Fire Protection, Mechanical and Electrical Systems Assessment, and Energy Studies, presenting multiple cross-sell opportunities to clients needing integrated building systems consulting.

Construction‑Lean Expertise The principals’ hands‑on construction background enables practical, buildable designs and close collaboration with project teams, which can be highlighted to win clients seeking reliable execution and fewer field changes.

Mid‑Market Growth With 11–50 employees and annual revenue in the mid‑range, CSI targets mid‑market projects where its size and agility can compete with larger firms, suggesting opportunities in expanding service footprints within that segment.

Tech‑Enabled Delivery Utilization of AutoCAD, cloud tools (AWS, Office 365), and analytics/marketing tech (Google Tag Manager, ProgressBar.js, WordPress) indicates a digitally adept operation that can leverage efficiency gains and data‑driven proposals to win and manage projects.

Financial Scale & Value Revenue of $10–25M positions CSI as a capable partner for larger project scopes within its specialty, enabling targeted outreach to clients with sizable energy, HVAC, and fire protection needs and potential for repeat engagements.

Similar companies to CSI Engineering

CSI Engineering Tech Stack

CSI Engineering uses 8 technology products and services including AutoCAD, Amazon Web Services, WordPress, and more. Explore CSI Engineering's tech stack below.

CSI Engineering's Email Address Formats

CSI Engineering uses at least 4 email formats:
CSI Engineering Email FormatsExamplePercentage
FLast@csi-engineers.comJDoe@csi-engineers.com
57%
First@csi-engineers.comJohn@csi-engineers.com
19%
Last@csi-engineers.comDoe@csi-engineers.com
19%
LastF@csi-engineers.comDoeJ@csi-engineers.com
5%

Frequently Asked Questions

What is CSI Engineering's phone number?

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You can contact CSI Engineering's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is CSI Engineering's official website and social media links?

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CSI Engineering's official website is csi-engineers.com and has social profiles on LinkedIn.

How much revenue does CSI Engineering generate?

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As of September 2026, CSI Engineering's annual revenue is estimated to be $10M - $25M.

What is CSI Engineering's SIC code and NAICS code?

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CSI Engineering's SIC code is 8711 - Engineering Services and NAICS code is 5413 - Architectural, Engineering, and Related Services.

How many employees does CSI Engineering have currently?

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As of September 2026, CSI Engineering has approximately 29 employees across 3 continents, including North America, Africa and Europe. Key team members include Office Manager: A. G., Principal: E. M. and Information Technology: D. L. Explore CSI Engineering's employee directory with LeadIQ.

What industry does CSI Engineering belong to?

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CSI Engineering operates in the Engineering Services industry.

What technology does CSI Engineering use?

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CSI Engineering's tech stack includes AutoCAD, Amazon Web Services, WordPress, Shopify, ProgressBar.js, Office 365, Google Tag Manager and FitVids.js.

What is CSI Engineering's email format?

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CSI Engineering's email format typically follows the pattern of FLast@csi-engineers.com. Find more CSI Engineering email formats with LeadIQ.

When was CSI Engineering founded?

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CSI Engineering was founded in 1996.
CSI Engineering logo

CSI Engineering

Engineering ServicesNew Hampshire, United States11-50 Employees

CSI Engineering is a small to mid-sized engineering services firm based in Portsmouth, New Hampshire, founded in 1996. It offers consulting across HVAC, electrical, plumbing, fire protection, and both mechanical and electrical systems assessments, along with energy studies. The firm emphasizes designs that are timely, within budget, and practical to construct, giving clients reliable outcomes. The principals' construction backgrounds inform a hands-on, project-level perspective, and they remain actively involved in every assignment.

The firm provides interdisciplinary consulting across building systems, focusing on practical, constructible solutions. By keeping principals engaged in every project, CSI Engineering emphasizes continuity and technical oversight throughout engagements.

Section iconCompany Overview

Phone number
SIC Code
8711 - Engineering Services
NAICS Code
5413 - Architectural, Engineering, and Related Services
Founded
1996
Employees
11-50

Section iconFunding & Financials

  • $10M - $25M

    CSI Engineering's revenue is estimated to be in the range of $10M - $25M

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