Business Details
50+ Years
experience
Trusted Engineering Solutions for Sustainable Buildings
Founded in 1969, Interface Engineering is a multidiscipline consultancy renowned for visionary sustainable design and breakthrough engineering solutions. With over 50 years of technical problem-solving expertise, we specialize in mechanical, electrical, plumbing, and building technology systems, delivering high-performance engineering for complex projects nationwide. Our team of 220 professionals operates across ten U.S. offices, offering full lifecycle support from concept through commissioning. As a 100% employee-owned company, we prioritize client collaboration and community impact, integrating advanced building science tools with resource-sensitive practices. Our work spans healthcare, education, government, and commercial sectors, consistently exceeding performance expectations while advancing sustainable innovation. Recognized for design firsts in projects like the Desert Rain and American Geophysical Union Headquarters, we combine technical excellence with a mission to create optimal environments for life.Our multidisciplinary approach ensures seamless integration of systems, while our third-party commissioning services guarantee operational efficiency and indoor air quality. With expertise in energy consulting, fire/life safety, and lighting design, we provide tailored solutions that balance functionality with environmental stewardship. Our leadership team of senior engineers and principals brings decades of specialized experience across all project phases, supported by cutting-edge technologies and rigorous quality assurance protocols. This enduring commitment to excellence has earned Interface Engineering a reputation as a trusted partner for technically challenging, sustainability-focused engineering projects nationwide.
Services
Mechanical Engineering
Electrical Engineering
Plumbing Design
Building Technologies
Commissioning Services
Energy Consulting
Fire/Life Safety
Lighting Design
Details
- Year established: 1969
Highlights and features
- We have over 55 years of experience in sustainable engineering design
- Our 100% employee-owned structure ensures client-focused commitment
- We offer LEED commissioning expertise and ASHRAE energy audit capabilities
- Our multidisciplinary team operates across 10 national offices
- We combine technical innovation with proven project delivery success
Services
Mechanical Engineering
Our mechanical engineering team designs high-performance HVAC systems using energy modeling and advanced control technologies. We specialize in natural ventilation, heat recovery, and radiant systems for optimized building efficiency. With expertise in ground source heat pumps and thermal mass design, we deliver tailored solutions that reduce energy consumption while maintaining comfort standards across healthcare, education, and commercial projects.
Electrical Engineering
We provide comprehensive electrical engineering services including power distribution, renewable energy integration, and low-voltage system design. Our engineers specialize in photovoltaic systems, power quality testing, and distributed generation solutions. By combining creative problem-solving with technical precision, we develop electrical systems that minimize energy costs while ensuring reliability and code compliance for institutional and commercial facilities.
Commissioning Services
Our certified commissioning agents ensure building systems operate as designed through rigorous testing and documentation. We provide LEED-certified commissioning, retro-commissioning, and O&M training services. With multidisciplinary expertise across all major building systems, we verify performance standards while identifying efficiency improvements that deliver long-term operational savings for new and existing facilities.
Building Technologies
We design integrated technology solutions for modern buildings, including telecommunications infrastructure and audio/visual systems. Our specialists implement converged network platforms that support security, automation, and wireless systems. By staying at the forefront of emerging technologies, we create intelligent environments that enhance functionality while supporting sustainability goals through optimized system integration and energy management.
Plumbing Design
Our plumbing engineers develop efficient water conservation and treatment systems for diverse applications. We specialize in greywater recycling, rainwater harvesting, and solar thermal systems that reduce resource consumption. With expertise in medical and industrial plumbing requirements, we deliver code-compliant solutions that balance sustainability with functional performance across healthcare, educational, and commercial facilities.
People
Andy Frichtl
Managing Principal
With decades of engineering leadership experience, Andy Frichtl oversees strategic operations while maintaining active involvement in complex project delivery across Interface's national practice.
Roger Frechette
Managing Principal
As a senior engineering executive, Roger Frechette focuses on technical excellence and client relationship development, leveraging extensive experience in sustainable building systems design.
Hormoz Janssens
Managing Principal
Hormoz Janssens leads business development initiatives while maintaining technical oversight of Interface's multidisciplinary engineering projects across multiple market sectors.
Michael Flemming
Principal, Commissioning Agent
A recognized commissioning expert, Michael Flemming specializes in verifying building system performance and optimizing energy efficiency through comprehensive testing and documentation protocols.
Nick Marcyan
Principal, Senior Commissioning Authority
With extensive commissioning experience, Nick Marcyan provides third-party verification services ensuring building systems meet design specifications and operational requirements.
Questions
What engineering services does Interface offer?
We provide mechanical, electrical, plumbing, and building technology engineering, plus commissioning services and energy consulting for high-performance buildings.
How does Interface approach sustainable design?
We integrate advanced building science tools with resource-sensitive practices, specializing in energy modeling, renewable systems, and LEED-certified commissioning.
What markets does Interface serve?
We work with healthcare, education, government, commercial, and institutional clients across the United States through our ten regional offices.
Is Interface employee-owned?
Yes, we became 100% employee-owned in 2024, reinforcing our commitment to client service and team member investment.
What commissioning services are available?
We offer LEED fundamental/enhanced commissioning, retro-commissioning, O&M training, and ASHRAE energy audits through certified professionals nationwide.
How can I join Interface's team?
We seek engineering professionals who share our passion for sustainable design and technical innovation across all our office locations.
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