Willen, Inc. is an AEE (Association of Energy Engineers) Certified, Independent provider of building commissioning services for both new construction projects and existing facilities. Founded in 1994, we have successfully provided Commissioning and Recommissioning services for government, educational (K-12, colleges and universities), institutional, and private commercial & industrial building owners and facility managers. Our services focus on the delivery process, system compliance, efficiency, reliability, and sustainability for each unique project.

Our construction industry knowledge and experience along with our technical skills and understanding of building systems allow us to offer an enhanced perspective platform to our clients. We promote a proactive and collaborative teamwork approach to building commissioning which adds value and efficiency to the construction sequence. Our hands on approach and attention to detail provide verifiable results and sustainable operating cost savings. We have developed and utilize commissioning and recommissioning processes that are uniquely effective and provide cost benefits from the initiation of our services.

Meet The Principals

John Williamson, CBCP
President & CEO
Steve Nelson, PE CEM, EBCP, LEED Green Associate
VP & Director of Engineering Memberships: ASHRAE, AEE, USGBC