ASHRAE STD 90.1 SI, 2025: Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
ASHRAE規格 STD 90.1 SI, 2025: Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
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Description
Standard 90.1 has been a benchmark for commercial building energy codes in the United States, and a key basis for codes and standards around the world, for almost half a century. This standard provides the minimum requirements for energy-efficient design of most sites and buildings, except low-rise residential buildings. It offers, in detail, the minimum energy efficiency requirements for design and construction of new sites and buildings and their systems, new portions of buildings and their systems, and new systems and equipment in existing buildings, as well as criteria for determining compliance with these requirements. It is an indispensable reference for engineers and other professionals involved in design of buildings, sites, and building systems.
The 2025 edition of Standard 90.1 continues ASHRAE's efforts to improve Energy efficiency for Commercial Buildings and Sites. The standard incorporates 105 addenda that advance levels of energy efficiency, expand options for compliance, and better align with industry practice and related ASHRAE standards.
Overall Organization and Structure
Revised, more consistent flowcharts that better illustrate key system requirements
Online access to climate zone tables via a free-to-read version of Standard 169
Updated and added new supporting tools
Updated normative and informative references