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Innovative, reliable engineering solutions delivered by a passionate team of hands-on problem solvers since 1989.
Trefz Engineering is a full-service M/E/P/FP engineering and design firm based in Pennsylvania with over three decades of experience. Founded on a deep understanding of both construction and engineering, our team specializes in creating practical, efficient, and future-ready systems for higher education, research, district energy, and other complex facilities.
Our Mission
To shape the future of M/E/P/FP engineering with forward-thinking, constructible solutions that empower our clients to tackle complex challenges. Through unwavering collaboration, continuous learning, and hands-on innovation, we strive to create a more resilient and sustainable built environment for all.
- Full lifecycle services
- Nationwide experience
- Currently licensed in CO, DE, KT, MD, NJ, and PA
- Experienced senior team members on every project
- Construction-minded expertise
- Track record of long-term client relationships
Our Hands-On Approach
Designed for Real-World Constructibility
We bring a construction mindset to every engineering project, ensuring our designs integrate with existing infrastructure. By anticipating challenges up front, we minimize costly surprises during construction and deliver systems that work as intended.
Life-Cycle Perspective: From Feasibility to Operation
We stay engaged from early feasibility studies through commissioning and post-occupancy support. This full lifecycle approach means we’re there to support the operations staff to ensure an easy transition, fine-tune solutions and ensure optimal performance, even after the installation is complete.
Collaboration & Problem-Solving Culture
At Trefz, our culture is defined by continuous learning, adaptability, and a commitment to rolling up our sleeves alongside architects, facilities managers, and contractors. We thrive on complex projects where our expertise and enthusiasm shine.
Our Team
We blend expertise, passion, and genuine collaboration to deliver exceptional results.
We see every project as an opportunity to learn and innovate. Our engineers are more than technical experts, they’re enthusiastic problem-solvers who embrace open dialogue and hands-on collaboration to tackle complex challenges. We believe that true innovation comes from collaboration, transparency, and mutual respect. By placing your goals at the forefront, we remain focused on delivering solutions that function reliably and stand the test of time, supporting your organization well into the future.
Who We Serve
Specialized knowledge for higher education, research, district energy, and more.
From campus energy systems and research laboratories to office renovations, we serve clients from a variety of industries and states who need comprehensive, future-focused M/E/P/FP solutions. Our district energy expertise, combined with hands-on design, ensures both large-scale and niche projects are delivered successfully.
Let’s Collaborate
Ready to partner with an engineering firm that rolls up its sleeves and gets the job done? We’d love to hear about your project needs.