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Standards Addenda

Addenda for ASHRAE Standards, including continuous maintenance standards, are available online in PDF format. Standards that are on continuous maintenance are continuously updated through addenda and ASHRAE makes these available free online. If you wish to comment on one or more addenda, please use:   Form for Submittal of Proposed Change to ASHRAE Standard Under Continuous Maintenance (Word Document)

Guideline 13-2000, Specifying Direct Digital Control Systems

• Guideline 13-2000: Addenda b, d, l, m, n, p, q
• Addenda to Guideline 13

Standard 15-1994, Safety Code for Mechanical Refrigeration

•  Addenda to Standard 15-1994 

Standard 15-2001, Safety Standard for Refrigeration Systems

•  Addendum to Standard 15-2001

ANSI/ASHRAE Standard 15-2004, Safety Standard for Refrigeration Systems

The Addenda Package contains Addendum b

Addendum c can be found in Addenda to Standard 15-2004

• Standard 15-2004: Addenda Supplement Package (PDF) 
• Addenda for Standard 15-2004

ANSI/ASHRAE Standard 34-1997, Number Designation and Safety Classification of Refrigerants

•  Addenda for Standard 34-1997

ANSI/ASHRAE Standard 34-2001, Designation and Safety Classifications of Refrigerants

•  Addenda to Standard 34-2001

ANSI/ASHRAE Standard 34-2004, Designation and Safety Classification of Refrigerants

The Addenda Package contains Addenda a, b, c, e, f, k, n, o, p, q, r, s, and u

• Standard 34-2004: Addenda Supplement Package (PDF)
• Standard 34-2004: Addenda d, j, l, m, t (PDF)
• Standard 34-2004: Addenda v, w (PDF)
• Other Addenda to Standard 34-2004

ANSI/ASHRAE Standard 34-2007, Designation and Safety Classification of Refrigerants

• Standard 34-2007: Addenda a, b,c,d,e,f,g,h

ANSI/ASHRAE/AMCA 51-1999, Laboratory Methods of Testing Fans for Aerodynamic Performance Rating

•  Addendum to Standard 51-1999/AMCA 210-99 

ANSI/ASHRAE Standard 52.2-1999, Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size

• Standard 52.2-1999: Addenda Supplement Package (PDF)

Standard 55-1992, Thermal Environmental Conditions for Human Occupancy

•  Addendum to Standard 55-1992 

ANSI/ASHRAE 62-1999, Ventilation for Acceptable Indoor Air Quality

•  Addenda to Standard 62-1999 

ANSI/ASHRAE 62-2001, Ventilation for Acceptable Indoor Air Quality

•  Addenda to Standard 62-2001 

ANSI/ASHRAE Standard 62.1-2004, Ventilation for Acceptable Indoor Air Quality

• Standard 62.1-2004: Addenda Supplement Package (PDF) (This Addenda Package contains Addenda a, b, c, d, and g.)
• Standard 62.1-2004: Addendum e and f (Contains Addenda e and f)
• Standard 62.1-2004 Addendum h

ANSI/ASHRAE Standard 62.2-2003, Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings

•  Addenda to Standard 62.2-2003 

ANSI/ASHRAE Standard 62.2-2004, Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings

The Addenda Package contains Addendum g.

Addenda, e, h, and i can be found in Addenda to Standard 62.2-2004.

• Standard 62.2-2004: Addenda Supplement Package (PDF) 
• Addenda to Standard 62.2-2004

Standard 90.1-1999, Energy Standard for Buildings Except Low-Rise Residential Buildings

• Addenda to Standard 90.1-1999 

Standard 90.1-2001, Energy Standard for Buildings Except Low-Rise Residential Buildings

• Addenda to Standard 90.1-2001 (I-P and SI versions)   

Standard 90.1-2004, Energy Standard for Buildings Except Low-Rise Residential Buildings (I-P and SI versions)

• Standard 90.1-2004: Addenda Supplement Package (PDF)  (Addenda Package includes a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, r, s, t, u, v, x, and ak)
• Standard 90.1-2004: Addendum q (PDF)
• Standard 90.1-2004: Addendum y (PDF)
• Standard 90.1-2004: Addenda aa, ab, ag, ah, aj, al, and am (PDF)
• Standard 90.1-2004: Addenda ac, an, and ao (PDF)
• Standard 90.1-2004: Addendum ad (PDF)  
• Standard 90.1-2004: Addenda ae and ai (PDF)
• Standard 90.1-2004: Addenda ap, aq, ar, and av (PDF)
• Standard 90.1-2004: Addenda as and at (PDF)

Standard 90.2-1993, Energy Efficient Design of New Low-Rise Residential Buildings

• Addenda to Standard 90.2-1993 

Standard 90.2-2001, Energy Efficient Design of New Low-Rise Residential Buildings

•  Addenda to Standard 90.2-2001 

ANSI/ASHRAE Standard 90.2-2004, Energy-Efficient Design of Low-Rise Residential Buildings

This Addenda Package contains Addenda a, b, f, g, h, and i. Addenda are listed as marked in the other Addenda package.

• Standard 90.2-2004: Addenda Supplement Package (PDF)
• Standard 90.2-2004: Addenda c, d, e, k (PDF)

Standard 100-1995, Energy Conservation in Existing Buildings

• Addendum to Standard 100

Standard 135-1995, BACnet® -- A Data Communication Protocol for Building Automation and Control Networks

• Addenda to Standard 135-1995

Standard 135-2001, BACnet® -- A Data Communication Protocol for Building Automation and Control Networks

• Addendum to Standard 135-2001

Standard 135-2004, BACnet® -- A Data Communication Protocol for Building Automation and Control Networks

• Addenda to Standard 135-2004

Standard 135.1-2003, Method of Test for Conformance to BACnet

• Addenda to Standard 135.1-2003

ANSI/ASHRAE Standard 140-2001, Standard Method of Test for the Evaluation of Building Energy Analysis Computer Programs

• Addendum to Standard 140-2001

ANSI/ASHRAE Standard 140-2004, Standard Method of Test for the Evaluation of Building Energy Analysis Computer Programs

•  Standard 140-2004: Addenda a & b (zip)

ANSI/ASHRAE Standard 169-2006, Weather Data for Building Design Standards

•  Addendum to Standard 169-2006 

Addenda Indexes for Standards 34, 62.1, 90.1, and 90.2

New editions of ASHRAE Standards are published which incorporate any addenda that have been approved for publication since the previous edition. Addenda to previous editions that have not yet been approved for publication are then re-lettered to identify them to the latest edition. This re-lettering of addenda may not occur until such time as the responsible project committee approves the addendum for a subsequent public review or for publication ("TBD"- To Be Determined). In some cases, the addendum letter will remain the same and only the year will change. Click on the applicable standard below to see an "Addenda Index" that will provide a cross-reference to the previous edition. Copies of these addenda are available only during the public review draft period and these addenda are only available for comment during this same period.

• ANSI/ASHRAE Standard 34-2004, Designation and Safety Classification of Refrigerants (October 23, 2007) (PDF)
• ANSI/ASHRAE Standard 62.1-2007, Ventilation for Acceptable Indoor Air Quality (March 13, 2008) (PDF)
• ANSI/ASHRAE/IESNA Standard 90.1-2004, Energy Standard for Buildings Except Low-Rise Residential Buildings (October 4, 2007) (PDF)
• ANSI/ASHRAE Standard 90.2-2004, Energy-Efficient Design of Low-Rise Residential Buildings (March 28, 2006) (PDF)
• How to Submit a Proposed Change to an ASHRAE Standard or Guideline Under Continuous Maintenance
• Go to the ASHRAE Bookstore to Purchase Standards