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Interpretations for Standard 90.1-2022

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NOTE: All documents linked from this page are in pdf_icon.png PDF-format.

pdf_icon.png Interpretation 90.1-2022-1 – January 30, 2024 (Refers to ANSI/ASHRAE/IES Standard 90.1-2022, Section 8.4.3, regarding exceptions for Electrical Energy Monitoring in health care facilities.)

pdf_icon.png Interpretation 90.1-2022-2 – January 30, 2024 (Refers to ANSI/ASHRAE/IES Standard 90.1-2022, Section 9.2.2 and Table 9.2.2, regarding table not referenced in Section 9.2.2.2.)

pdf_icon.png Interpretation 90.1-2022-3 – January 30, 2024 (Refers to ANSI/ASHRAE/IES Standard 90.1-2022, Section 7.4.2 and Table 7.4-1, regarding Heat Pump Water Heaters used for Domestic Water Heating.)

pdf_icon.png Interpretation 90.1-2022-4 – June 6, 2024 (Refers to ANSI/ASHRAE/IES Standard 90.1-2022, Section 9.1.4, regarding lighting equipment wattage for calculating lighting power.)

pdf_icon.png Interpretation 90.1-2022-5 – June 6, 2024 (Refers to ANSI/ASHRAE/IES Standard 90.1-2022, Section 6.5.3.1.3, regarding AMCA Standard 208.)

pdf_icon.png Interpretation 90.1-2022-6 – April 10, 2025 (Refers to ANSI/ASHRAE/IES Standard 90.1-2022, Section 5.5.5.5, and Tables 12.5.1 and A10.1, regarding linear thermal bridges not addressed in 5.5.5.1/5.5.5.4.)

pdf_icon.png Interpretation 90.1-2022-7- February 3, 2026
(Refers to the following requirements presented in ANSI/ASHRAE/IES Standard 90.1-2022: Section 6.4.1.1, item p, and Table 6.8.1-16, regarding the efficiency rating requirements of heat pump and heat recovery water chilling packages.) 

pdf_icon.png Interpretation 90.1-2022-8 - February 3, 2026
(Refers to the following requirements presented in ANSI/ASHRAE/IES Standard 90.1-2022: Section 8.4.2, regarding automatic receptacle controls at individual workstations.) 

pdf_icon.png Interpretation 90.1-2022-9 - February 3, 2026
(Refers to the following requirements presented in ANSI/ASHRAE/IES Standard 90.1-2022: Section 8.4.2, regarding automatic receptacle controls at desks within private offices.) 

pdf_icon.png Interpretation 90.1-2022-10 - February 3, 2026
(Refers to the following requirements presented in ANSI/ASHRAE/IES Standard 90.1-2022: Sections 4.2.1.1, 10.5.1, 10.5.1.1, and 11.5.1, regarding renewable system power.)

pdf_icon.png Interpretation 90.1-2022-11 - February 3, 2026
(Refers to the following requirements presented in ANSI/ASHRAE/IES Standard 90.1-2022: Section 11.5.1, regarding energy credit requirements for rooftop PVs.)

pdf_icon.png Interpretation 90.1-2022-12 - February 3, 2026
(Refers to the following requirements presented in ANSI/ASHRAE/IES Standard 90.1-2022: regarding the interplay between 10.5.1 and Equation 11.5.1 for determining available roof space for renewable energy resources.)

pdf_icon.png  Interpretation 90.1-2022 -13 – May 14, 2026
(This request for interpretation refers to ANSI/ASHRAE/IES Standard 90.1-2022 and pertains to the centralized outdoor air systems serving multiple thermal zones (e.g. DOAS+terminual-unit) and application of the budget building systems model.)

pdf_icon.png  Interpretation 90.1-2022 -14 – May 14, 2026
(This request for interpretation refers to ANSI/ASHRAE /IES Standard 90.1-2022 and pertains to the requirements in Section 10.5 and the trade-off requirements with Energy Cost Budget or Performance Rating Method.)

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