Welcome to the website of FSi consulting engineers!

At FSi, we focus on our vision to “Provide quality engineering and excellent service based on extra-ordinary relationships inside and outside of FSi.” We have worked hard to create a culture where personal skills are valued as highly as technical skills. We hear our clients’ needs and expectations, and turn them into great projects. We successfully create rapport that builds long-term relationships with our clients. We are flexible, proactive, and motivated.

Since 1985, FSi consulting engineers has been providing professional engineering services to building owners, architects, contractors, and other engineers when they need solutions for HVAC, piping, plumbing, fire protection, and industrial ventilation. Our services include studies, design, construction support, and project management.

Our clients are glad to have us on their team. We are here to connect with people and produce great engineering projects, and that’s why our tag line is:
Excellent Service, Effective Relationships

To learn more, take a moment to explore our web site. You’ll find information about our company, our staff, and our projects. We’re known as a firm that listens. Talk to us! We look forward to working with you.

Recent News

Updates on Washington and Seattle Energy Code Changes


The 2012 Washington Energy Code has gone into effect in some jurisdictions, and we’ve learned new information about the City of Seattle Draft Energy Code.

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Featured Project

US Navy Shore Intermediate Maintenance Facility

Navy Shore Intermediate Maintenance Facility

FSi was prime consultant, and mechanical and fire protection engineer, for conversion of a 56,000 SF warehouse with mezzanines, into a shore side maintenance facility for repair of docked ships.

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