Clarifications for the use of prescriptive provisions when performing building energy use modeling, and revisions to enhance capturing daylighting when performing modeling calculations.Improved equipment efficiencies for chillers.Improved requirements for expanded use of energy recovery, small-motor efficiencies, and fan power control and credits.New provisions for commercial refrigeration equipment and improved controls for heat rejection and boiler equipment.Revised equipment efficiencies for heat pumps, packaged terminal air conditioners (PTACs), single package vertical heat pumps and air conditioners (SPVHP and SPVAC), and evaporative condensers.
Improvements to daylighting controls, space-by-space lighting power density limits, and thresholds for toplighting.Revised, stricter opaque element and fenestration requirements at a reasonable level of cost-effectiveness.This 2013 edition has been expanded to include new features and more detailed requirements, as well as incorporating changes from more than 100 addenda. It is an indispensable reference for engineers and other professionals involved in design of buildings and building systems. It offers, in detail, the minimum energy-efficient requirements for design and construction of new 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. This standard provides the minimum requirements for energy-efficient design of most buildings, except low-rise residential buildings. Name of Legally Binding Document: ASHRAE 90.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 more than 35 years. Ignorance of the law shall not excuse noncompliance and it is the responsibility of the citizens to inform themselves as to the laws that are enacted in the United States of America and in the states and cities contained therein. You are urged to check with the standards organizations or governmental authorities for further information and access to definitive versions of these important laws.Īll citizens and residents are hereby advised that this is a legally binding document duly incorporated by reference and that failure to comply with such requirements as hereby detailed within may subject you to criminal or civil penalties under the law. In addition, standards bodies will frequently issue errata or reissue standards over time and governmental bodies may change which standards they incorporate to law. Please note that the process of scanning, OCR, and rekeying might introduce errors. Many of the laws in this collection were re-keyed into HTML and diagrams redrawn for increased usability and accessibility. Note that many of these documents had to be procured on the used marketplace. We posted this document in order to allow citizens to read the laws that govern us. This document was posted by, which is not affiliated with nor authorized by the United States government, any state government, or the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE).