Welcome!

---

45-Day Public Review Period from April 18, 2025, to June 02, 2025

• COMMENT
  BSR/ASHRAE Standard 41.9-2021R, Standard Methods for Refrigerant Mass Flow Measurements Using Calorimeters (First Public Review Draft)

  Full Public Review

  Standard Methods for Refrigerant Mass Flow Measurements Using Calorimeters
• COMMENT
  BSR/ASHRAE Standard 185.5P, Method of Testing HVAC-duct mounted Devices and Systems and In-Room devices for Particle and Microorganism Removal or Inactivation in a Chamber with a Recirculating Duct System (1st Publication Public Review)

  Full Public Review

  Method of Testing HVAC-duct mounted Devices and Systems and In-Room devices for Particle and Microorganism Removal or Inactivation in a Chamber with a Recirculating Duct System

---

45-Day Public Review Period from April 25, 2025 to June 09, 2025

• COMMENT
  BSR/ASHRAE Standard 241P, Control of Infectious Aerosols (1st Publication Public Review)

  Full Public Review

  Control of Infectious Aerosols
• COMMENT
  BSR/ASHRAE/ASPE/AWWA Standard 191P, Standard for the Efficient Use of Water in Building Mechanical Systems (Fifth ISC Public Review Draft)

  Independent Substantive Change Public Review (ISC)

  Standard for the Efficient Use of Water in Building Mechanical Systems

---

30-Day Public Review Period from May 02, 2025 to June 01, 2025

• COMMENT
  ASHRAE Addendum u to ANSI/ASHRAE Standard 62.2-2022, Ventilation and Acceptable Indoor Air Quality in Residential Buildings (First Public Review Draft)

  Full Public Review

  Ventilation and Acceptable Indoor Air Quality in Residential Buildings
• COMMENT
  BSR/ASHRAE Addendum ac to ANSI/ASHRAE Standard 15-2024, Safety Standard for Refrigeration Systems (Second Publication Public Review Draft)

  Full Public Review

  Safety Standard for Refrigeration Systems
• COMMENT
  BSR/ASHRAE/IES Addendum bu to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings (Second Public Review Draft - ISC)

  Independent Substantive Change Public Review (ISC)

  Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE/IES Addendum cm to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings (First Public Review Draft)

  Full Public Review

  Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE/IES Addendum co to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings (First Public Review Draft)

  Full Public Review

  Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE/IES Addendum cp to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings (First Public Review Draft)

  Full Public Review

  Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE/IES Addendum cq to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings (First Public Review Draft)

  Full Public Review

  Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE/IES Addendum cu to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings (First Public Review Draft)

  Full Public Review

  Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE/IES Addendum cz to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings (First Public Review Draft)

  Full Public Review

  Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE/IES Addendum da to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings (First Public Review Draft)

  Full Public Review

  Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE/ICC/IES/USGBC Addendum o to BSR/ASHRAE/ICC/IES/USGBC Standard 189.1-2023 (First Publication Public Review)

  Full Public Review

  Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings

---

45-Day Public Review Period from May 02, 2025 to June 16, 2025

• COMMENT
  BSR/ASHRAE/IES Addendum ae to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings (Second Public Review Draft - ISC)

  Independent Substantive Change Public Review (ISC)

  Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE/IES Addendum cn to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings (First Public Review Draft)

  Full Public Review

  Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE/IES Addendum cr to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings (First Public Review Draft)

  Full Public Review

  Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE Standard 145.4P, Method of Test for Assessing the Gas-Phase Performance of Air Cleaning Devices and Systems in a Duct-Chamber Apparatus (First Public Review Draft)

  Full Public Review

  Method of Test for Assessing the Gas-Phase Performance of Air Cleaning Devices and Systems in a Duct-Chamber Apparatus

---

30-Day Public Review Period from May 16, 2025 to June 15, 2025

• COMMENT
  BSR/ASHRAE/IES Addendum ct to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings (First Public Review Draft)

  Full Public Review

  Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE/IES Addendum db to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings (First Public Review Draft)

  Full Public Review

  Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE/ICC/IES/USGBC Addendum n to BSR/ASHRAE/ICC/IES/USGBC Standard 189.1-2023, (First Public Review Draft)

  Full Public Review

  Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE/ICC/IES/USGBC Addendum p to BSR/ASHRAE/ICC/IES/USGBC Standard 189.1-2023, (First Public Review Draft)

  Full Public Review

  Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE/ICC/IES/USGBC Addendum b to BSR/ASHRAE/ICC/IES/USGBC Standard 189.1-2023 (3rd Public Review Draft)

  Full Public Review

  Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings

---

45-Day Public Review Period from May 16, 2025 to June 30, 2025

• COMMENT
  BSR/ASHRAE/IES Addendum bk to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings (Second Public Review Draft)

  Full Public Review

  Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
• COMMENT
  BSR/ASHRAE/IES Addendum cy to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings (First Public Review Draft)

  Full Public Review

  Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings

---

45-Day Public Review Period from May 23, 2025 to July 07, 2025

• COMMENT
  ASHRAE/ASHE Addendum m to ANSI/ASHRAE/ASHE Standard 170-2021, Ventilation of Health Care Facilities (Third Independent Substantive Change Public Review Draft)

  Independent Substantive Change Public Review (ISC)

  Ventilation of Health Care Facilities
• COMMENT
  Addendum b to ASHRAE Guideline 36-2024, High-Performance Sequences of Operation for HVAC Systems (First Public Review Draft)

  Full Public Review

  High-Performance Sequences of Operation for HVAC Systems
• COMMENT
  Addendum k to ASHRAE Guideline 36-2024, High-Performance Sequences of Operation for HVAC Systems (First Public Review Draft)

  Full Public Review

  High-Performance Sequences of Operation for HVAC Systems

---

30-Day Public Review Period from May 23, 2025 to June 22, 2025

• COMMENT
  BSR/ASHRAE Addendum z to ANSI/ASHRAE Standard 15-2024, Safety Standard for Refrigeration Systems (Second Public Review Draft - ISC)

  Independent Substantive Change Public Review (ISC)

  Safety Standard for Refrigeration Systems
• COMMENT
  Addendum a to ASHRAE Guideline 36-2024, High-Performance Sequences of Operation for HVAC Systems (First Public Review Draft)

  Full Public Review

  High-Performance Sequences of Operation for HVAC Systems

• PROPOSE
  ASHRAE Guideline 0 The Commissioning Process for New Buildings and New Systems
• PROPOSE
  ASHRAE Guideline 1.1 Application of the Commissioning Process to New HVAC&R Systems
• PROPOSE
  ASHRAE Guideline 1.4 Preparing Systems Manuals for Facilities
• PROPOSE
  ASHRAE Guideline 1.5 Application of the Commissioning Process to Smoke Control Systems
• PROPOSE
  ASHRAE Guideline 10 Interactions Affecting the Achievement of Acceptable Indoor Environments
• PROPOSE
  ASHRAE Guideline 12 Managing the Risk of Legionellosis Associated With Building Water Systems
• PROPOSE
  ASHRAE Guideline 13 Specifying Building Automation Systems
• PROPOSE
  ASHRAE Guideline 14 Measurement of Energy, Demand and Water Savings
• PROPOSE
  ASHRAE Standard 15 Safety Standard for Refrigeration Systems
• PROPOSE
  ASHRAE Standard 15.2 Safety Standard for Refrigeration Systems in Residential Applications
• PROPOSE
  ASHRAE Guideline 28 Air Quality Within Commercial Aircraft
• PROPOSE
  ASHRAE Standard 30 Method of Testing Liquid Chillers
• PROPOSE
  ASHRAE Standard 34 Designation and Safety Classification of Refrigerants
• PROPOSE
  ASHRAE Guideline 36 High-Performance Sequences of Operation for HVAC Systems
• PROPOSE
  ASHRAE Guideline 41 Design, Installation and Commissioning of Variable Refrigerant Flow (VRF) Systems
• PROPOSE
  ASHRAE Guideline 42 Enhanced Indoor Air Quality in Commercial and Institutional Buildings
• PROPOSE
  ASHRAE Standard 52.2 Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size
• PROPOSE
  ASHRAE Standard 55 Thermal Environmental Conditions for Human Occupancy
• PROPOSE
  ASHRAE Standard 62.1 Ventilation and Acceptable Indoor Air Quality
• PROPOSE
  ASHRAE Standard 62.2 Ventilation and Acceptable Indoor Air Quality in Residential Buildings
• PROPOSE
  ASHRAE Standard 72 Method of Testing Open and Closed Commercial Refrigerators and Freezers
• PROPOSE
  ASHRAE/IES Standard 90.1 Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
• PROPOSE
  ASHRAE/IES Standard 90.2 High-Performance Energy Design of Residential Buildings
• PROPOSE
  ASHRAE Standard 90.4 Energy Standard for Data Centers
• PROPOSE
  ASHRAE/IES Standard 100 Energy and Emissions Building Performance Standard for Existing Buildings
• PROPOSE
  ASHRAE Standard 127 Method of Testing for Rating Air-Conditioning Units Serving Data Center (DC) and Other Information Technology Equipment (ITE) Spaces
• PROPOSE
  ASHRAE Standard 135 BACnet® - A Data Communication Protocol for Building Automation and Control Networks
• PROPOSE
  ASHRAE Standard 135.1 Method of Test for Conformance to BACnet®
• PROPOSE
  ASHRAE Standard 140 Method of Test for Evaluating Building Performance Simulation Software
• PROPOSE
  ASHRAE Standard 145.1 Laboratory Test Method for Assessing the Performance of Gas-Phase Air-Cleaning Systems: Loose Granular Media
• PROPOSE
  ASHRAE Standard 145.2 Laboratory Test Method for Assessing the Performance of Gas-Phase Air-Cleaning Systems: Air-Cleaning Devices
• PROPOSE
  ASHRAE Standard 147 Reducing the Release of Halogenated Refrigerants from Refrigerating and Air-Conditioning Equipment and Systems
• PROPOSE
  ASHRAE Standard 154 Ventilation for Commercial Cooking Operations
• PROPOSE
  ASHRAE Standard 160 Criteria for Moisture-Control Design Analysis in Buildings
• PROPOSE
  ASHRAE Standard 161 Air Quality within Commercial Aircraft
• PROPOSE
  ASHRAE Standard 169 Climatic Data for Building Design Standards
• PROPOSE
  ASHRAE/ASHE Standard 170 Ventilation of Health Care Facilities
• PROPOSE
  ASHRAE Standard 185.1 Method of Testing UV-C Lights for Use in Air-Handling Units or Air Ducts to Inactivate Airborne Microorganisms
• PROPOSE
  ASHRAE Standard 185.2 Method of Testing Ultraviolet Lamps for Use in HVAC&R Units or Air Ducts to Inactivate Microorganisms on Irradiated Surfaces
• PROPOSE
  ASHRAE Standard 188 Legionellosis: Risk Management for Building Water Systems
• PROPOSE
  ASHRAE/USGBC/IES/ICC Standard 189.1 Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings
• PROPOSE
  ASHRAE/ASHE Standard 189.3 Design, Construction and Operation of Sustainable High Performance Health Care Facilities
• PROPOSE
  ASHRAE/IES Standard 202 The Commissioning Process Requirements for New Buildings and New Systems
• PROPOSE
  ASHRAE Standard 205 Representation of Performance Data for HVAC&R and Other Facility Equipment
• PROPOSE
  ASHRAE Standard 209 Building Performance Simulation Process
• PROPOSE
  ASHRAE Standard 211 Standard for Commercial Building Energy Audits
• PROPOSE
  ASHRAE Standard 221 Test Method to Field-Measure and Score the Cooling and Heating Performance of an Installed Unitary HVAC System
• PROPOSE
  ASHRAE Standard 224 Standard for the Application of Building Information Modeling
• PROPOSE
  ASHRAE Standard 228 Standard Method of Evaluating Zero Net Energy and Zero Net Carbon Building Performance
• PROPOSE
  ASHRAE Standard 230 The Commissioning Process Requirements for Existing Buildings and Systems
• PROPOSE
  ASHRAE Standard 232 Common Content and Specifications for Building Data Schemas
• PROPOSE
  ASHRAE Standard 514 Risk Management for Building Water Systems: Physical, Chemical, and Microbial Hazards