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ASHRAE Membership

ASHRAE membership is open to any person associated with heating, ventilation, air conditioning or refrigeration. ASHRAE is unique because its membership is drawn from a wide range of disciplines relating to the HVAC&R field. Over 56,000 individuals from more than 100 nations belong to the Society.

Discounts on Publications

ASHRAE members earn 15% off publications. Hundreds of titles are available including the complete collection of ASHRAE Standards including 90.1, 62.1 and 189.1.

Develop Leadership Skills

When you join ASHRAE, you are making an investment in yourself. When you become active in the Society by giving your time and sharing your knowledge, you get even more out of that investment.

Network with Industry Professionals

Each month, all over the world, ASHRAE chapters convene for an informational program featuring a speaker or topic that is key to professionals in the industry. Meet with your peers and share ideas.
Need technical info? Search ASHRAE's Bookstore >
Standards, Research & Technology

Resilience Activities in ASHRAE


Helping buildings and their systems withstand and recover from natural disasters requires a lot of technical knowledge. Here, ASHRAE has provided resources to help designers make buildings more resilient so they can absorb, recover from and more successfully adapt to adverse events.


HPB - High Performing Buildings Magazine


When disasters strike, buildings can turn into traps as they did in Hurricane Katrina, or they can provide places of refuge. High Performing Buildings Magazine provides case studies and articles to help designers and owners make their buildings more resilient.



Building Industry Statement on Resilience

Leaders of America’s design and construction industry, including ASHRAE, released a report on progress made on the resilience front since the Resilience Building Coalition announced the Building Industry Statement on Resilience two years ago. The Resilience Building Coalition also released a set of guiding principles to help the building industry adopt resilient design and policies. These include developing and advocating for codes and policies that advance resilience; developing “whole-systems resilient design” approaches for the built environment; and providing guidance, beyond the baseline life-safety codes, that recognizes the importance of fortifying property for individual and community resilience.

pdf_icon.png Industry Statement on Resilience

pdf_icon.png Preparing to Thrive: The Building Industry Statement on Resilience


ASHRAE Position Documents



pdf_icon.png Combustion of Solid Fuels and Indoor Air Quality in Primarily Developing Countries

pdf_icon.png Filtration and Air Cleaning (PDF)

pdf_icon.png Indoor Air Quality (PDF) (Updated June 2017)

pdf_icon.png Limiting Indoor Mold and Dampness in Buildings (PDF) (Updated January 2016)


In Process (Proposed or Revision)


Estimated Approval Date

Energy Efficiency in Buildings

Winter Meeting 2018

Indoor Air Quality

Winter Meeting 2018

Climate Change

Fall 2017

Resiliency in the Built Environment

Winter Meeting 2018





See Titles, Purposes, and Scopes All Standards

Standards Development Process

ASHRAE Standards can be purchased through the ASHRAE Online Bookstore.

ASHRAE Guideline 0-2013 – The Commissioning Process

ASHRAE Guideline 0.2-2015 - The Commissioning Process for Existing Systems and Assemblies

ASHRAE Guideline 1.4-2014 – Procedures for Preparing Facility Systems Manuals

ASHRAE Guideline 29-2009 – Guideline for Risk Management of Public Health and Safety in Buildings
Revision committee approved January 28, 2015 with the same TPS.

Guideline 32-2012 - Sustainable, High Performance Operations & Maintenance

GPC 34P - Energy Guideline for Historical Buildings

ANSI/ASHRAE Standard 15-2016 –Safety Standard for Refrigeration Systems

ANSI/ASHRAE Standard 52.2-2017 - Method of Testing General Ventilation Air Cleaning Devices for Removal Efficiency by Particle Size

ANSI/ASHRAE 55-2013 - Thermal Environmental Conditions for Human Occupancy

ANSI/ASHRAE Standard 62.1-2016 - Ventilation for Acceptable Indoor Air Quality

ANSI/ASHRAE/IES 90.1-2016 - Energy Standard for Buildings Except Low-Rise Residential Buildings

ANSI/ASHRAE Standard 90.4-2016 - Energy Standard for Data Centers

ANSI/ASHRAE/IES 100-2015 - Energy Efficiency in Existing Buildings

ANSI/ASHRAE Standard 105-2014 - Standard Methods of Determining, Expressing and Comparing Building Energy Performance and Greenhouse Gas Emissions

ANSI/ASHRAE Standard 135-2016 -BACnet - A Data Communication Protocol for Building Automation and Control Networks

ANSI/ASHRAE Standard 147-2013 - Reducing the Release of Halogenated Refrigerants from Refrigerating and Air-Conditioning Equipment and Systems

ANSI/ASHRAE Standard 160-2009 - Criteria for Moisture-Control Design Analysis in Buildings

ANSI/ASHRAE Standard 169-2013 - Climatic Data for Building Design Standards

ANSI/ASHRAE/ASHE 170-2013 – Ventilation of Health Care Facilities

ANSI/ASHRAE Standard 171-2017 – Method of Test of Seismic Restraint Devices for HVAC&R Equipment

ANSI/ASHRAE/ACCA 180-2012 - Standard Practice for Inspection and Maintenance of Commercial-Building HVAC Systems

ANSI/ASHRAE Standard 185.1-2015 – Method of Testing UVC Lights for Use in Air Handling Units or Air Ducts to Inactivate Airborne Microorganisms

ANSI/ASHRAE Standard 185.2-2014 –Method of Testing Ultraviolet Lamps for Use in HVAC&R Units or Air Ducts to Inactivate Microorganisms on Irradiated Surfaces

ANSI/ASHRAE Standard 188-2015 - Legionellosis: Risk Management for Building Water Systems

ANSI/ASHRAE/USGBC/IES 189.1-2014 - Standard for the Design of High-Performance, Green Buildings Except Low-Rise Residential Buildings

ANSI/ASHRAE/ASHE 189.3-2017 - Design, Construction and Operation of Sustainable High Performance Health Care Facilities

SPC 191P- Standard for the Efficient Use of Water in Building Mechanical System

Standard 201-2016 - Facility Smart Grid Information Model

ANSI/ASHRAE/IES Standard 202-2013 - Commissioning Process for Buildings and Systems



Technical Committees


ASHRAE Technical Committees consist of people who have a recognized proficiency in a specific field of interest. Links are provided below to each applicable Technical Committee.

See Scopes for All Technical Committees

1.12 Moisture Management in Buildings

2.1 Physiology and Human Environment

2.3 Gaseous Air Contaminants and Gas Contaminant Removal Equipment

2.4 Particulate Air Contaminants and Particulate Contaminant Removal Equipment

2.5 Global Climate Change

2.7 Seismic and Wind Resistant Design

2.8 Building Environmental Impacts and Sustainability

2.9 Ultraviolet Air and Surface Treatment

TG2 Heating Ventilation and Air-Conditioning Security (HVAC)

3.6 Water Treatment

4.2 Climatic Information

4.3 Ventilation Requirements and Infiltration

4.4 Building Materials and Building Envelope Performance

4.5 Fenestration

4.10 Indoor Environmental Modeling

5.6 Control of Fire and Smoke

5.8 Industrial Ventilation

5.9 Enclosed Vehicular Facilities

6.7 Solar Energy Utilization

7.1 Integrated Building Design

7.3 Operation and Maintenance Management

7.5 Smart Building Systems

7.6 Building Energy Performance

7.8 Owning and Operating Costs

7.9 Building Commissioning

9.1 Large Building Air-Conditioning Systems

9.2 Industrial Air Conditioning

9.3 Transportation Air Conditioning

9.4 Justice Facilities

9.6 Healthcare Facilities

9.7 Educational Facilities

9.8 Large Building Air-Conditioning Applications

9.9 Mission Critical Facilities, Data Centers, Technology Spaces and Electronic Equipment

9.10 Laboratory Systems

9.11 Clean Spaces

9.12 Tall Buildings

10.7 Commercial Food and Beverage Refrigeration Equipment

MTG.BD Building Dampness

MTG.O&MEE Operations and Maintenance Activities That Impact Energy Efficiency

MTG.OBB Occupant Behavior in Buildings





These Research Project Final Reports document the results of the research project, and are approved by the sponsoring Technical Committee.

The selected projects have been divided into four categories of Resilience Aspects:

Efficiency | IAQ | Operation | Health/Comfort | Safety



1196-RP -- Develop Software to Calculate the Application Seasonal Efficiency of Commercial Space Heating Boiler Systems Based on ASHRAE Standard 155P  January 2007 – June 2016

1327-RP -- Flow Regime and Pressure Drop Determination for Two-Phase Ammonia Upward Flow in Various Riser Sizes
April 2007 – January 2016

1385-RP -- Development of Design Tools for Surface Water Heat Pump Systems (SWHP)
September 2009 – January 2016

1408-RP -- The Effect of Lining Length on the Insertion Loss of Acoustical Duct Liner in Sheet Metal Ductwork
September 2008 – January 2016

1414-RP -- Update of U-Factors, Solar Heat Gain Coefficients and Visible  Transmittances of Standard Fenestration Units Made from Representative Fenestration Frame and Glazing Systems in the Fenestration Chapter of the Handbook of Fundamentals
September 2015 – November 2016

1455-RP -- Advanced Control Sequences for HVAC Systems – Phase I Air Distribution and Terminal Systems
April 2009 – January 2015

1467-RP -- Balancing Latent Heat Load between Display Cases and Store Comfort Cooling
September 2009 – January 2015

1535-RP -- A Heat Transfer and Friction Factor Correlation for Low Air-Side Reynolds Number Applications of Compact Heat Exchangers
April 2012 – January 2016

1556-RP -- Characterization of Liquid Refrigerant Flow Emerging from a Flooded Evaporator Tube Bundle
September 2012 – February 2016

1564-RP -- Measurement of Oil Retention in the Microchannel Heat Exchangers
October 2011 – January 2016

1587-RP -- Control Loop Performance Assessment
April 2014 – March 2016

1607-RP -- Design and Utilization of Thermal Energy Storage to Increase the Ability of Power Systems to Support Renewable Energy Resources
April 2015 – September 2016

1608-RP -- Development of a Load-Based Method of Test for Light Commercial Unitary HVAC
January 2014 – December 2015

1588-RP -- Representative Layer-by-Layer Descriptions for Fenestration Systems with Specified Bulk Properties such as U-factor and SHGC 
September 2013 – January  2016

1602-RP -- Thermal-Fluid Behavior of Mixed Refrigerants for Cryogenic Applications
December 2012 – January 2016

1627-RP -- An Evaluation of the Actual Energy Performance of Small Office and K-12 School Buildings Designed in Accordance with the 30% ASHRAE Advanced Energy Design Guides
September 2014 – February 2016

1629-RP -- Testing and Modeling Energy Performance of Active Chilled Beam Systems  
December 2013 – May 2016

1634-RP -- Guide for Sustainable Refrigerated Facilities and Refrigeration Systems
March 2014 – August 2016

1641-RP -- Effect of Unsaturated Fluorocarbon Contaminants on the Reliability and Performance of HVAC&R Equipment
September 2013 –  January 2016

1651-RP -- Development of Maximum Technically Achievable Energy Targets for Commercial Buildings (Ultra Low Energy

1677-RP   Measurements and Prediction of Waterside Fouling Performance of Internally Enhanced Tubes in Cooling Tower Applications
September 2013 – February 2018

1681-RP  -- Low Energy Lighting Heat Gain Distribution in Buildings
September 2014 – April 2016; Iowa State University; Principal Investigator, Ran Liu; TC 4.1, Load Calculation Data and Procedures

1682-RP -- Study to Identify CFD Models for Use in Determining HVAC Duct Fitting Loss Coefficients
June 2014 – June 2016

1696-RP -- Thermal and Moisture Transport Property Values for New Building and Insulating Materials
September 2015 – August 2018

1699-RP -- Update Climatic Design Data in Chapter 14 of the 2017 Handbook of Fundamentals
June 2014 – May 2016

1702-RP -- Case Studies to Test Performance Measurement Protocols (PMP)
September 2015 – August 2017

1705-RP -- Investigation of Airside Fouling on Outdoor Heat Exchangers
November 2015 – October 2017

1724-RP -- Study the HVAC System Photodegradation  caused by the Low Level UVC Light Irradiance Used for Coil Maintenance and Air Stream Disinfection
April 2015 – September 2016

1766-RP -- Development of a Unified Tool for Analysis of Room Loads and Conditions
December 2015 – November 2016



1284-RP -- Develop a Standard for Testing and Stating the Efficiency of Industrial Pulse Cleaned Dust Collectors
April 2006 – June 2016

1450-RP -- Transport of Contaminants from Garages Attached or Integral to Low-Rise Residential Buildings
December 2013 – May 2016

1604-RP -- Demand Controlled Filtration for Cleanrooms
September 2011 – March 2016

1624-RP -- Effective Energy-Efficient School Classroom Ventilation for Temperate  Zones
June 2014 – February 2017

1631-RP -- Countertop Commercial Appliance Emissions
April 2014 – January 2016

1635-RP -- Simplified Procedure for Calculating Exhaust/Intake Separation Distances
May 2014 – January 2016

1663-RP  -- Residential IAQ Guide
September 2015 – February 2017

1712-RP Design Guide for Dedicated Outdoor-Air Systems
June 2014 – November 2016

1747-RP -- Implementation of RP-1547 CO2-based Demand Controlled Ventilation for Multiple Zone HVAC Systems in Direct Digital Control Systems
September 2015 – February 2017



1590-RP -- Implementation of Total Cost of Ownership (TCO) Principles into Higher Education as an Integrated Decision Making Tool
September 2009 – January 2016

1615-RP -- Fault Detection and Diagnostic (FDD) Methods for Supermarkets – Phase I
April 2015 – June 2016

1746-RP -- Validation of RP-1455 Advanced Control Sequences for HVAC Systems – Air Distribution and Terminal Systems
January 2015 – May 2016



1262-RP -- Relate Air Quality and Other Factors to Comfort and Health Related Symptoms Reported by Passengers and Crew on Commercial Transport Aircraft (Part 2)  April 2006 – June 2016

1399-RP -- Survey of Particle Production Rates from Process Activities in Pharmaceutical and Biological Cleanrooms
April 2014 – March 2016

1529-RP -- Full- Frequency Numerical Modeling of Sound Transmission in and Radiation from Lined Ducts
September 2012 – January 2016

1546-RP -- Expansion and Update ADPI for Overhead Mixing Systems in both Cooling and Heating
September 2012 – January 2016

1630-RP -- Update the Scientific Evidence for Specifying Lower Limit Relative Humidity Levels for Comfort, Health and IEQ in Occupied Spaces 
September 2014 – January 2016

1738-RP -- Field Measurements and Modeling of UVC Cooling Coil Irradiation for HVAC Energy Use Reduction
January 2015 – May 2016



1447-RP -- Performance of Pressurized Stairwells with Open Doors

1507-RP -- Binary Refrigerant Flame Boundary Concentrations

1569-RP -- CFD Study of Hydraulic Shock in Two-Phase Anhydrous Ammonia

RP-1580 -- Study of Input Parameters for Risk Assessment of 2L Flammable Refrigerants in Residential Air Conditioning and Commercial Refrigeration Applications

RP-1583 -- Assessment of Burning Velocity Test Methods

RP-1584 -- Developing Alternative Approaches to Predicting the Laminar Burning Speed of Refrigerants Using the Minimum Ignition Energy

1692-RP --  Effects of Shielding on the Wind Loads on Roof Mounted Equipment

1717-RP -- Improve Accuracy and Reproducibility of ASTM-E681 Test Methods for Flammability Limit Measurement of 2L Flammable Refrigerants
April 2015 – September 2016

Co-RP 2 – Revised Guidance for Physical & Cyber HVAC Security; Responsible Organization: CIBSE (Charted Institution of Building Services Engineers – U.K.). Status: On-going

Co-RP 4 - Investigation of Ignition Temperature (Hot surface and Auto Ignition) for 2L Refrigerants; Responsible Organization: AHRTI (Air-conditioning, Heating, and Refrigeration Technology Institute). Status: On-going

Projects Related to A2L and A3 Flammable Refrigerants

RP-1806 -- Flammable Refrigerants Post-ignition Risk Assessment

RP-1807 -- Guide to A2L Refrigerant Handling and System Installation and Servicing – Phase 1: Review Existing practice requirements

RP-1808 -- Guide to A2L Refrigerant Handling and System Installation and Servicing – Phase 2: Guide Development

Other ASHRAE A2L Research

RTAR 1728 -- Development of Models for Production of Oil Refrigerant Mixture Properties of Low GWP Refrigerants and Synthetic Compressor Oils. Status: Research Topic Acceptance Request (RTAR) approved. TC working on work statement.

RTAR 1731 -- Heat Transfer Performance of Medium Pressure Alternative Lower GWP Refrigerants in a Flooded Evaporator Comprising an Enhanced Tube Bundle. Status: RTAR approved. TC working on work statement.

RTAR 1773 -- Ignition Potential from Electrical Devices in Commercial and Residential Applications using 2L Refrigerants. Status: RTAR approved. TC working on work statement. 

RP-1507 -- Binary Refrigerant Flame Boundary Concentrations. Status: Active Project




ASHRAE Handbook Chapters


2015 ASHRAE Handbook—HVAC Applications

3. Commercial and Public Buildings
7. Educational Facilities
8. Health Care Facilities
11. Mass Transit

14. Industrial Air Conditioning
15. Enclosed Vehicular Facilities
19. Data Centers and Telecommunication Facilities
23. Museums, Galleries, Archives, and Libraries
24. Environmental Control for Animals and Plants
27. Power Plants
28. Nuclear Facilities
29. Mine Ventilation and Air Conditioning
31. Ventilation of the Industrial Environment
32. Industrial Local Exhaust

35. Solar Energy Use

36. Energy Use and Management
37. Owning and Operating Costs
38. Testing, Adjusting, and Balancing
39. Operation and Maintenance Management
41. Building Energy Monitoring
42. Supervisory Control Strategies and Optimization
43. HVAC Commissioning

44. Building Envelopes
46. Air Cleaners for Gaseous Contaminants
47. Design and Application of Controls
49. Water Treatment: Deposition, Corrosion,
and Biological Control
51. Snow Melting and Freeze Protection
53. Fire and Smoke Control
55. Seismic- and Wind-Resistant Design
58. Integrated Building Design
59. HVAC Security
60. Ultraviolet Air and Surface Treatment
61. Smart Building Systems
62. Moisture Management in Buildings


2014 ASHRAE Handbook—Refrigeration

1. Halocarbon Refrigeration Systems
2. Ammonia Refrigeration Systems
3. Carbon Dioxide Refrigeration Systems
9. Refrigerant Containment, Recovery, Recycling, and Reclamation

10. Insulation Systems for Refrigerant Piping
13. Secondary Coolants in Refrigeration Systems
15. Retail Food Store Refrigeration and Equipment
16. Food Service and General Commercial Refrigeration Equipment
17. Household Refrigerators and Freezers

19. Thermal Properties of Foods
20. Cooling and Freezing Times of Foods
21. Commodity Storage Requirements
22. Food Microbiology and Refrigeration
23. Refrigerated-Facility Design
24. Refrigerated-Facility Loads

25. Cargo Containers, Rail Cars, Trailers, and Trucks
26. Marine Refrigeration
27. Air Transport

28. Methods of Precooling Fruits, Vegetables, and Cut Flowers
29. Industrial Food-Freezing Systems
30. Meat Products
31. Poultry Products
32. Fishery Products
33. Dairy Products
34. Eggs and Egg Products
35. Deciduous Tree and Vine Fruit
36. Citrus Fruit, Bananas, and Subtropical Fruit
37. Vegetables
38. Fruit Juice Concentrates and Chilled Juice Products
39. Beverages
40. Processed, Precooked, and Prepared Foods
41. Bakery Products
42. Chocolates, Candies, Nuts, Dried Fruits, and Dried Vegetables

43. Ice Manufacture
44. Ice Rinks
45. Concrete Dams and Subsurface Soils
46. Refrigeration in the Chemical Industry

47. Cryogenics
48. Ultralow-Temperature Refrigeration
49. Biomedical Applications of Cryogenic Refrigeration


2013 ASHRAE Handbook—Fundamentals

1.   Psychrometrics
2.   Thermodynamics and Refrigeration Cycles
3.   Fluid Flow
4.   Heat Transfer
5.   Two-Phase Flow
6.   Mass Transfer
7.   Fundamentals of Control
8.   Sound and Vibration

9.  Thermal Comfort
10.  Indoor Environmental Health
11.  Air Contaminants
12.  Odors
13.  Indoor Environmental Modeling

14.  Climatic Design Information
15.  Fenestration
16.  Ventilation and Infiltration
17.  Residential Cooling and Heating Load Calculations
18.  Nonresidential Cooling and Heating Load Calculations
19.  Energy Estimating and Modeling Methods

20.  Space Air Diffusion
21.  Duct Design
22.  Pipe Sizing
23.  Insulation for Mechanical Systems
24.  Airflow Around Buildings

25.  Heat, Air, and Moisture Control in Building Assemblies—Fundamentals
26.  Heat, Air, and Moisture Control in Building Assemblies—Material Properties
27.  Heat, Air, and Moisture Control in Building Assemblies—Examples

28.  Combustion and Fuels
29.  Refrigerants
30.  Thermophysical Properties of Refrigerants
31.  Physical Properties of Secondary Coolants (Brines)
32.  Sorbents and Desiccants
33.  Physical Properties of Materials

34.  Energy Resources
35.  Sustainability
36.  Measurement and Instruments
37.  Abbreviations and Symbols
38.  Units and Conversions
39.  Codes and Standards


2012 ASHRAE Handbook—Systems and Equipment

1.   HVAC System Analysis and Selection
2.   Decentralized Cooling and Heating
3.   Central Cooling and Heating
4.   Air Handling and Distribution
5.   In-Room Terminal Systems
6.   Panel Heating and Cooling
7.   Combined Heat and Power Systems
8.   Combustion Turbine Inlet Cooling
9.   Applied Heat Pump and Heat Recovery Systems
10. Small Forced-Air Heating and Cooling Systems
11. Steam Systems
12. District Heating and Cooling
13. Hydronic Heating and Cooling
14. Condenser Water Systems
15. Medium- and High-Temperature Water Heating
16. Infrared Radiant Heating
17. Ultraviolet Lamp Systems
18. Variable-Refrigerant-Flow Systems

19. Duct Construction
20. Room Air Distribution Equipment
21. Fans
22. Humidifiers
23. Air-Cooling and Dehumidifying Coils
24. Desiccant Dehumidification and Pressure- Drying Equipment
25. Mechanical Dehumidifiers and Related Components
26. Air-to-Air Energy Recovery Equipment
27. Air-Heating Coils
28. Unit Ventilators, Unit Heaters, and Makeup Air Units
29. Air Cleaners for Particulate Contaminants
30. Industrial Gas Cleaning and Air Pollution Control Equipment

31. Automatic Fuel-Burning Equipment
32. Boilers
33. Furnaces
34. Residential In-Space Heating Equipment
35. Chimney, Vent, and Fireplace Systems
36. Hydronic Heat-Distributing Units and Radiators
37. Solar Energy Equipment

38. Compressors
39. Condensers
40. Cooling Towers
41. Evaporative Air-Cooling Equipment
42. Liquid Coolers
43. Liquid-Chilling Systems

44. Centrifugal Pumps
45. Motors, Motor Controls, and Variable-Speed Drives
46. Pipes, Tubes, and Fittings
47. Valves
48. Heat Exchangers

49. Unitary Air Conditioners and Heat Pumps
50. Room Air Conditioners and Packaged Terminal Air Conditioners

51. Thermal Storage
52. Codes and Standards







Special Reports from ASHRAE on Environmental Security
After 9/11, ASHRAE published Risk Management Guidance for Health and Safety under Extraordinary Incidents on January 12, 2002. A year later an expanded version of the document was published to include Environmental Security.

Risk Management Guidance for Health and Safety under Extraordinary Incidents (January 12, 2002):

pdf_icon.png Presidential Study Group: Final Report (PDF) (33.7 KB)

Risk Management Guidance for Health, Safety and Environmental Security under Extraordinary Incidents (January 26, 2003):

pdf_icon.png Executive Summary (PDF) (61.9 KB) 

pdf_icon.png Full Document (419 KB) 



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