Designed for HVAC professionals, the 2019 edition of ASHRAE’s Standard 90.1 code includes more than 100 energy-focused updates since the last edition was published in 2016. In addition, the 2021 IECC incorporates significant changes over the 2018 edition, including:
- Increased insulation requirements and reduced fenestration U-factors and solar heat gain coefficients for both residential and commercial provisions.
- Updated mechanical equipment efficiency requirements, new provisions for data centers and plant growth lighting.
- Increased lighting efficacy and decreased lighting power density requirements for commercial buildings.
