
Patrick Ryan, PE, CEM
Patrick Ryan, PE, CEM, is a mechanical engineer and Deputy Discipline Lead at Dewberry.
Articles
Codes and Standards
April 16, 2025
How addenda to ASHRAE Standard 90.1-2022 affect design
The standard is updated every three years, and addenda directly affect design.
By Patrick Ryan, PE, CEM
Codes and Standards
April 2, 2025
Know how to navigate compliance paths of ASHRAE Standard 90.1
The shift toward energy efficiency will require engineers and designers to become proficient in the updated methods and requirements contained within ASHRAE Standard 90.1-2022.
By Patrick Ryan, PE, CEM