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About This Item
Full Description
ASHRAE/IES Standard 100 provides criteria for reduced energy consumption through improved energy efficiency and performance in existing buildings.
Among changes to the 2018 edition of the standard are the following:
- Updated Purpose to more clearly state the goal of the standard.
- Addition of normative primary energy EUI target tables in Sections 7 and 10 and in Normative Annex A, and a primary energy EUI calculation option in Annex A, to add an alternative compliance path for the qualified person seeking compliance with the standard
- Clarification of energy audit requirements for buildings without energy targets by qualifying when a Level 1 audit can be used to comply with the standard
- Addition of new Informative Annex M to provide guidance on selecting the appropriate building type
Document History
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ASHRAE 100-2024
Standard 100-2024 -- Energy and Emissions Building Performance Standard for Existing Buildings (ANSI/IES Approved)- Most Recent
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ASHRAE 100-2018
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Standard 100-2018 -- Energy Efficiency in Existing Buildings (ANSI Approved/IES Co-sponsored)- Historical Version
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ASHRAE 100-2015
Standard 100-2015 -- Energy Efficiency in Existing Buildings (ANSI Approved/IES Co-sponsored)- Historical Version
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ASHRAE 100-2006
Standard 100-2006 -- Energy Conservation in Existing Buildings (ANSI/IES Approved)- Historical Version
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ASHRAE 100-1995
Standard 100-1995 -- Energy Conservation in Existing Buildings (ANSI Approved/IESNA cosponsored)- Historical Version
Amendments, rulings, supplements, and errata
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ASHRAE 100-2018 Addendum k
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Addendum k to Standard 100-2018 -- Energy Efficiency in Existing Buildings (ANSI Approved/IES Co-sponsored) -
ASHRAE 100-2018 Addendum j
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Addendum j to Standard 100-2018 -- Energy Efficiency in Existing Buildings (ANSI Approved/IES Co-sponsored) -
ASHRAE 100-2018 Addendum e
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Addendum e to Standard 100-2018 -- Energy Efficiency in Existing Buildings (ANSI Approved/IES Co-sponsored) -
ASHRAE 100-2018 Addendum i
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Addendum i to Standard 100-2018 -- Energy Efficiency in Existing Buildings (ANSI Approved/IES Co-sponsored) -
ASHRAE 100-2018 Addendum d
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Addendum d to Standard 100-2018 -- Energy Efficiency in Existing Buildings (ANSI Approved/IES Co-sponsored) -
ASHRAE 100-2018 Addendum f
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Addendum f to Standard 100-2018 -- Energy Efficiency in Existing Buildings (ANSI Approved/IES Co-sponsored) -
ASHRAE 100-2018 Addendum c
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Addendum c to Standard 100-2018 -- Energy Efficiency in Existing Buildings (ANSI Approved/IES Co-sponsored) -
ASHRAE 100-2018 Addendum b
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Addendum b to Standard 100-2018 -- Energy Efficiency in Existing Buildings (ANSI Approved/IES Co-sponsored)