Home›Knowledge›ASHRAE 90.1 — Energy Standard for Buildings Except Low-Rise Residential
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ASHRAE 90.1 — Energy Standard for Buildings Except Low-Rise Residential

Updated May 22, 2026
Sets minimum efficiency for envelope, HVAC, lighting, and SWH systems. Adopted by reference in IECC and many state energy codes.

Used as the citation backbone for the equipment-schedule workflow. Note: 90.1 sets minimums — actual HVAC sizing must come from Manual J/N, not just sqft-per-ton heuristics.

TAGS
ASHRAE90.1energy-codeHVAC-efficiencyenvelope
DETAILS
book
ASHRAE 90.1-2022
mep calc workflow
q-equipment-schedule
SOURCES
🔗https://www.ashrae.org/technical-resources/bookstore/standar...
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