Keith Hammelman, PE

Principal, Mechanical Engineering Leader


Engineering requires lifelong learning and that's where Keith has found the most joy across his 26-year career. He leads our firm’s mechanical engineering team, overseeing a vast team of engineers located in several of our offices. 

Keith is an industry leader at the forefront of new mechanical building solutions such as decarbonization, electrification and technology. He is personable and approachable to both his internal team and his clients, priding himself on finding commonalities to reach goals and come to solutions. With his expertise crossing typologies and geographies, Keith is a firm proponent of CannonDesign’s Single-Firm, Multi-Office (SFMO) platform—balancing the firm’s resources to give clients the best solutions for their needs.  

A few clients and collaborators

  • Los Angeles Unified School District
  • Ohlone Community College
  • Medical College Wisconsin
  • Oak Ridge National Laboratory
  • FERMI National Labs


  • Complex project delivery
  • Educational facilities
  • How to utilize BIM in our process


  • Being active in ASHRAE's technical committee
  • Helping inform the HVAC industry during the pandemic
  • Supporting his daughter’s passion for women’s rugby