Lighting control requirements for parking garages were updated. A new simplified method for lighting (new Section 9.2) was added. The model is more representative of real-world conditions with the inclusion of updated IES recommendations. Lighting: Lighting power allowances for the Space-by-Space Method and the Building Area Method were modified.Changes to the vestibule section refined the exceptions and added a new option and associated criteria for using air curtains. The air leakage section was revised to clarify compliance. Minimum criteria for SHGC and U-factor were upgraded across all climate zones. Building Envelope: For vertical fenestration, the categories of “nonmetal framed” and “metal framed” products were combined.Section 4.2.5, “Verification, Testing, and Commissioning,” was greatly expanded and requirements were outlined for commissioning in accordance with ASHRAE/IES Standard 202. Administration and Enforcement: Commissioning requirements were added to the standard for the first time.
“This new version focuses on energy-saving measures which we hope will reward designs for achieving energy cost levels above the standard minimum and result in more efficient buildings and more innovative solutions.” “The goal of the 2019 version of 90.1 was to provide clearer guidance for exceeding efficiency goals,” said Drake Erbe, chair of the Standard 90.1 committee.
OctoASHRAE Releases Expanded, Revised Version of Standard 90.1ĪSHRAE has released an expanded, revised version of a well-known energy standard.ĪNSI/ASHRAE/IES Standard 90.1-2019, Energy Efficiency Standard for Buildings Except Low-Rise Residential Buildings, contains more than 100 changes from the 2016 version, including numerous energy-saving measures.
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