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Full Description

Previous versions of this document, errata, and a supplement containing addenda a, b, c, g, h, i, j, k, l, m, n, p, q, s, t, u, w, y, ad, and aw, are available under the Product Family tab.

This 2007 edition of the standard has several new features and includes changes resulting from the continuous maintenance proposals from the public, including all of the Addenda to Standard 90.1-2004. 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 envelopes 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.
     

    Document History

    1. ASHRAE 90.1-2013 (I-P)


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

      • Most Recent
    2. ASHRAE 90.1-2010 (I-P)


      Standard 90.1-2010 (I-P Edition) -- Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IES Co-sponsored)

      • Historical Version
    3. ASHRAE 90.1-2007 (I-P)

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      viewing


      Standard 90.1-2007 (I-P Edition) -- Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IESNA Co-sponsored)

      • Historical Version
    4. ASHRAE 90.1-2004 (I-P)


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

      • Historical Version
    5. ASHRAE 90.1-2001 (I-P)


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

      • Historical Version
    6. ASHRAE 90.1-1999 (I-P)


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

      • Historical Version
    7. ASHRAE/BSR 90.1-1989R (Format Compliance)


      Independent Substantive Change (Format and Compliance) - Energy Standard for Buildings Except Low-Rise Residential Buildings

      • Historical Version
    8. ASHRAE/BSR 90.1-1989R (Power)


      Independent Substantive Change (Power) - Energy Standard for Buildings Except Low-Rise Residential Buildings

      • Historical Version
    9. ASHRAE/BSR 90.1-1989R (Lighting)


      Independent Substantive Change (Lighting) - Energy Standard for Buildings Except Low-Rise Residential Buildings

      • Historical Version
    10. ASHRAE/BSR 90.1-1989R (Envelope)


      Independent Substantive Change (Envelope) - Energy Standard for Buildings Except Low-Rise Residential Buildings

      • Historical Version
    11. ASHRAE 90.1-1989R (ECB)


      Independent Substantive Change (ECB) - Energy Standard for Buildings Except Low-Rise Residential Buildings

      • Historical Version
    12. 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
    13. ASHRAE 90.1-1989 (Non-Windows version)


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

      • Historical Version
     

    Amendments & Errata

    1. ASHRAE/IES 90.1-2007 Supplement

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      Supplement to Energy Standard for Buildings Except Low-Rise Residential Buildings: Addenda a, b, c, g, h, i, j, k, l, m, n, p, q, s, t, u, w, y, ad, and aw

    2. ASHRAE/IES 90.1-2007 Errata (I-P) (August 15, 2011)

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      Errata Sheet for ANSI/ASHRAE/IESNA Standard 90.1-2007 (I-P edition) Energy Standard for Buildings Except Low-Rise Residential Buildings

    3. ASHRAE/IES IC 90.1-2007-6

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      Interpretation IC 90.1-2007-6 of Energy Standard for Buildings Except Low-Rise Residential Buildings: Addenda a, b, c, g, h, i, j, k, l, m, n, p, q, s, t, u, w, y, ad, and aw

    4. ASHRAE/IES IC 90.1-2007-7

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      Interpretation IC 90.1-2007-7 of Energy Standard for Buildings Except Low-Rise Residential Buildings: Addenda a, b, c, g, h, i, j, k, l, m, n, p, q, s, t, u, w, y, ad, and aw

    5. ASHRAE/IES IC 90.1-2007-8

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      Interpretation IC 90.1-2007-8 of Energy Standard for Buildings Except Low-Rise Residential Buildings: Addenda a, b, c, g, h, i, j, k, l, m, n, p, q, s, t, u, w, y, ad, and aw

    6. ASHRAE/IES IC 90.1-2007-9

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      Interpretation IC 90.1-2007-9 of Energy Standard for Buildings Except Low-Rise Residential Buildings: Addenda a, b, c, g, h, i, j, k, l, m, n, p, q, s, t, u, w, y, ad, and aw

    7. ASHRAE/IES IC 90.1-2007-10

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      Interpretation IC 90.1-2007-10 of Energy Standard for Buildings Except Low-Rise Residential Buildings

    8. ASHRAE/IES IC 90.1-2007-11

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      Interpretation IC 90.1-2007-11 of Energy Standard for Buildings Except Low-Rise Residential Buildings

    9. ASHRAE/IES 90.1-2007 Addendum ac

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      Addendum ac to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    10. ASHRAE/IES 90.1-2007 Addenda ag, ai, aj, ak, ay, bc, and bd

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      Addenda ag, ai, aj, ak, ay, bc, and bd to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    11. ASHRAE/IES 90.1-2007 Addendum al

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      Addendum al to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    12. ASHRAE/IES 90.1-2007 Addenda am, aq, and ax

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      Addenda am, aq, and ax to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    13. ASHRAE/IES 90.1-2007 Addenda ar, av, and bp

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      Addenda ar, av, and bp to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    14. ASHRAE/IES 90.1-2007 Addenda bf, bn, and bs

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      Addenda bf, bn, and bs to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    15. ASHRAE/IES 90.1-2007 Addenda bi and bt

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      Addenda bi and bt to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    16. ASHRAE/IES 90.1-2007 Addenda bu

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      Addenda bu to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    17. ASHRAE/IES 90.1-2007 Addenda bx, by, ca, cb, and cc

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      Addenda bx, by, ca, cb, and cc to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    18. ASHRAE/IES 90.1-2007 Addenda cd, ck, cn, cq, ct, and cv

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      Addenda cd, ck, cn, cq, ct, and cv to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    19. ASHRAE/IES 90.1-2007 Addenda ce and cp

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      Addenda ce and cp to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    20. ASHRAE/IES 90.1-2007 Addendum cf

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      Addendum cf to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    21. ASHRAE/IES 90.1-2007 Addenda ch, cl, and db

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      Addenda ch, cl, and db to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    22. ASHRAE/IES 90.1-2007 Addenda cr, cs, cw, cz, da, and dc

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      Addenda cr, cs, cw, cz, da, and dc to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    23. ASHRAE/IES 90.1-2007 Addenda cy, co, dd, de, and df

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      Addenda cy, co, dd, de, and df to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    24. ASHRAE/IES 90.1-2007 Addenda d, o, x, aa, ab, ae, at, au, and ba

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      Addenda d, o, x, aa, ab, ae, at, au, and ba to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    25. ASHRAE/IES 90.1-2007 Addenda dg, di, dj, dk, and dl

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      Addenda dg, di, dj, dk, and dl to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    26. ASHRAE/IES 90.1-2007 Addenda dn, do, dp, dq, and dr

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      Addenda dn, do, dp, dq, and dr to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    27. ASHRAE/IES 90.1-2007 Addenda e, as, az-bw

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      Addenda e, as, az, bg, bh, bj, bk, bl, bm, bo, bq, br, bv, and bw to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    28. ASHRAE/IES 90.1-2007 Addendum f

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      Addendum f to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    29. ASHRAE/IES 90.1-2007 Addendum r

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      Addendum r to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    30. ASHRAE/IES 90.1-2007 Addenda v, af, an, ao, and ap

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      Addenda v, af, an, ao, and ap to ANSI/ASHRAE/IESNA Standard 90.1-2007 (SI Edition)

    31. ASHRAE/IES IC 90.1-2007-12

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      Interpretation IC 90.1-2007-12 of ANSI/ASHRAE/IESNA Standard 90.1-2007 Energy Standard for Buildings Except Low-Rise Residential Buildings

    32. ASHRAE/IES IC 90.1-2007-13

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      Interpretation IC 90.1-2007-13 of ANSI/ASHRAE/IESNA Standard 90.1-2007 Energy Standard for Buildings Except Low-Rise Residential Buildings

    33. ASHRAE/IES IC 90.1-2007-14

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      Interpretation IC 90.1-2007-9 of Energy Standard for Buildings Except Low-Rise Residential Buildings

    34. ASHRAE/IES IC 90.1-2007-15

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      Interpretation IC 90.1-2007-15 of Energy Standard for Buildings Except Low-Rise Residential Buildings

    35. ASHRAE/IES IC 90.1-2007-16

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      Interpretation IC 90.1-2007-16 of Energy Standard for Buildings Except Low-Rise Residential Buildings

    36. ASHRAE/IES IC 90.1-2007-17

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      Interpretation IC 90.1-2007-17 of Energy Standard for Buildings Except Low-Rise Residential Buildings

    37. ASHRAE/IES IC 90.1-2007-18

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      Interpretation IC 90.1-2007-18 of Energy Standard for Buildings Except Low-Rise Residential Buildings

    38. ASHRAE/IES IC 90.1-2007-19

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      Interpretation IC 90.1-2007-19 of Energy Standard for Buildings Except Low-Rise Residential Buildings

    39. ASHRAE/IES IC 90.1-2007-20

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      Interpretation IC 90.1-2007-20 of Energy Standard for Buildings Except Low-Rise Residential Buildings

    40. ASHRAE/IES IC 90.1-2007-21

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      Interpretation IC 90.1-2007-21 of Energy Standard for Buildings Except Low-Rise Residential Buildings

    41. ASHRAE/IES IC 90.1-2007-22

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      Interpretation IC 90.1-2007-22 of Energy Standard for Buildings Except Low-Rise Residential Buildings

    42. ASHRAE/IES IC 90.1-2007-24

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      Interpretation IC 90.1-2007-24 of Energy Standard for Buildings Except Low-Rise Residential Buildings

    43. ASHRAE/IES IC 90.1-2007-23

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      Interpretation IC 90.1-2007-23 of Energy Standard for Buildings Except Low-Rise Residential Buildings

    44. ASHRAE IC 90.1-2007-25

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      Interpretation IC 90.1-2007-25 of ANSI/ASHRAE Standard 90.1-2007 Energy Standard for Buildings Except Low-Rise Residential Buildings

    45. ASHRAE IC 90.1-2007-26

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      Interpretation IC 90.1-2007-26 of ANSI/ASHRAE Standard 90.1-2007 Energy Standard for Buildings Except Low-Rise Residential Buildings

    46. ASHRAE IC 90.1-2007-27

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      Interpretation IC 90.1-2007-27 of Energy Standard for Buildings Except Low-Rise Residential Buildings

    47. ASHRAE IC 90.1-2007-28

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      Interpretation IC 90.1-2007-28 of Energy Standard for Buildings Except Low-Rise Residential Buildings