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Full Description

This 2004 edition of the standard has several new features and includes changes resulting from the continuous maintenance proposals from the public. The standard has been completely reformatted for ease of use and clarity. The climate zones have been reduced from 26 to 8 and the Lighting LPDs have been reduced as well.

The purpose of this standard is to provide minimum requirements for the energy-efficient design of buildings except low-rise residential buildings.

This standard provides (a) minimum energy-efficient requirements for the design and construction of 1. new buildings and their systems, 2. new portions of buildings and their systems, and 3. new systems and equipment in existing buildings and (b) criteria for determining compliance with these requirements.

The provisions of this standard apply to the envelope of buildings, provided that the enclosed spaces are 1. heated by a heating system whose output capacity is greater than or equal to 3.4 Btu/h•ft2 or 2. cooled by a cooling system whose sensible output capacity is greater than or equal to 5 Btu/h•ft2. The provisions also apply to the following systems and equipment used in conjunction with buildings: 1. heating, ventilating, and air conditioning, 2. service water heating, 3. electric power distribution and metering provisions, 4. electric motors and belt drives, and 5. lighting.

The provisions of this standard do not apply to (a) single-family houses, multi-family structures of three stories or fewer above grade, manufactured houses (mobile homes) and manufactured houses (modular), (b) buildings that do not use either electricity or fossil fuel, or (c) equipment and portions of building systems that use energy primarily to provide for industrial, manufacturing, or commercial processes. Where specifically noted in this standard, certain other buildings or elements of buildings shall be exempt. This standard shall not be used to circumvent any safety, health, or environmental requirements.

Related Products:
• 90.1 User's Manual
• Standard 90.1-2004 (I-P) Edition
•Looking for an earlier version? This Standard also has a superseded version. You may view it by visiting the Superseded and Withdrawn Standards page.

 

Document History

  1. ASHRAE 90.1-2013 (SI)


    Standard 90.1-2013 (SI Edition) -- Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IES Co-sponsored)

    • Most Recent
  2. ASHRAE 90.1-2010 (SI)


    Standard 90.1-2010 (SI Edition) -- Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI/ASHRAE/IES)

    • Historical Version
  3. ASHRAE 90.1-2007 (SI)


    Standard 90.1-2007 (SI Edition) -- Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IES Co-sponsored)

    • Historical Version
  4. ASHRAE 90.1-2004 (SI)

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    viewing


    Standard 90.1-2004 (SI Edition) -- Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IESNA Co-sponsored)

    • Historical Version
  5. ASHRAE 90.1-2001 (SI)


    Standard 90.1-2001 (SI) -- Energy Standard for Buildings Except Low-Rise Residential Buildings (IESNA cosponsored; ANSI approved; Continuous Maintenance Standard)

    • Historical Version
  6. ASHRAE 90.1-1999 (SI)


    Standard 90.1-1999 (SI) -- Energy Standard for Buildings Except Low-Rise Residential Buildings (IESNA cosponsored; ANSI approved)

    • Historical Version
  7. ASHRAE 90.1-1989 (Windows version)


    Standard 90.1-1989 (Windows version) -- Energy Efficient Design of New Buildings Except Low-Rise Residential Buildings

    • Historical Version
 

Amendments & Errata

  1. ASHRAE/IES IC 90.1-2004-33

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    Interpretation for Standard 90.1-2004 (I-P Edition) -- Energy Standard for Buildings Except Low-Rise Residential Buildings

  2. ASHRAE/IES IC 90.1-2004-34

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    Interpretation for Standard 90.1-2004 (I-P Edition) -- Energy Standard for Buildings Except Low-Rise Residential Buildings

  3. ASHRAE 90.1-2004 Addenda a-p, r-v, x, and ak

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    Addenda Supplement to Standard 90.1-2004 -- Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IESNA Co-sponsored) -- I-P

  4. ASHRAE 90.1-2004 Addenda aa, ab, ag, ah, aj, al, and am

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    Addenda aa, ab, ag, ah, aj, al, and am to Standard 90.1-2004 -- Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IESNA Co-sponsored) -- I-P

  5. ASHRAE 90.1-2004 Addenda ac, an, and ao

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    Addenda ac, an, and ao to Standard 90.1-2004 -- Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IESNA Co-sponsored) -- I-P

  6. ASHRAE 90.1-2004 Addendum ad

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    Addendum ad to Standard 90.1-2004 -- Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IESNA Co-sponsored) -- I-P

  7. ASHRAE 90.1-2004 Addenda ae and ai

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    Addenda ae and ai to Standard 90.1-2004 -- Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IESNA Co-sponsored) -- I-P

  8. ASHRAE 90.1-2004 Addenda ap, aq, ar, and av

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    Addenda ap, aq, ar, and av to Standard 90.1-2004 -- Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IESNA Co-sponsored) -- I-P

  9. ASHRAE 90.1-2004 Addenda as and at

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    Addenda as and at to Standard 90.1-2004 -- Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IESNA Co-sponsored) -- I-P

  10. ASHRAE 90.1-2004 Addendum q

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    Addendum q to Standard 90.1-2004 -- Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IESNA Co-sponsored) -- I-P

  11. ASHRAE 90.1-2004 Addendum y

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    Addendum y to Standard 90.1-2004 -- Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IESNA Co-sponsored) -- I-P