2023 40 Under 40: Ari Greenberg, PE, LEED AP BD+C, CPHC, 31

Senior Associate, HVAC & Sustainable Design, BR+A; BSE, Mechanical Engineering, Princeton University

By Consulting-Specifying Engineer May 15, 2023

Since he was 12, Greenberg has been in love with buildings. Growing up in a family-run residential construction company, he worked summers and got his hands dirty. Fast-forward to now and Greenberg serves as an integrated member of the HVAC design and sustainability consulting teams at BR+A. A graduate of Princeton University, Greenberg holds a bachelor’s in mechanical engineering with a certificate in sustainable energy. His work focuses on efficiency and electrification for hard-to-heat and high-energy buildings in the health care, research, commercial and institutional sectors. Greenberg is the primary project manager for various deep energy design projects, including net zero buildings and master plans. He also leads energy efficiency and electrification efforts for dozens of projects, delivering analysis and educating designers and clients. His technical expertise includes HVAC design, energy modeling, life cycle cost analysis and system optimization. In addition to his design and consulting duties, Greenberg’s role at BR+A includes teaching both internally and externally. He provides dynamic in-person and online training sessions on topics including electrification, energy codes, sustainability trends and more. According to Greenberg’s peers, he is a leader whose energetic personality shines through in his ability to clearly communicate solutions to complex problems. As a proud outdoorsman, Greenberg’s passion for sustainability is more than just professional. His time in nature during his off-the-clock hours has motivated him to promote technologies that will help preserve the environment for future generations. When he isn’t working, Greenberg can be found backpacking with his wife and dog, renovating their 1950s fixer-upper or wrenching on his 1973 Volkswagen Beetle.