Public Review Announcement for CSA Z317.2:Special requirements for heating, ventilation, and air-conditioning (HVAC) systems in health care facilities

The Canadian Standards Association (CSA Group) is pleased to announce that the draft new edition of CSA Z317.2 Special requirements for heating, ventilation, and air-conditioning (HVAC) systems in health care facilities, is now at Public Review.  

Public Review comments will be accepted until June 5th, 2019.

As with every standard, CSA Z317.2 is a living document, and the new edition contains new and revised material to make it a better and more comprehensive Standard. The current draft reflects the best efforts of the committee that developed it, the Technical Subcommittee on Special Requirements for HVAC Systems in Health Care Facilities, under the jurisdiction of the Technical Committee on Health Care Facilities and the Strategic Steering Committee on Health Care Technology. This new edition provides updated guidance on requirements for the planning, design, construction, commissioning, operation, and maintenance of HVAC systems in HCFs. It is important to note that

requirements covered within this Standard can also be subject to applicable federal, provincial, and local regulations.

New edition highlights and changes

Significant changes in this edition include the following:

  1. a) Clarification of HVAC requirements for rooms and areas used for similar or different functions;
  2. b) Increased use of performance requirements in place of prescriptive design specifications, particularly with respect to system redundancy;
  3. c) Updated airflow requirements for the operating room and sterile core in Table 1;
  4. d) Updated and expanded HVAC design criteria for scope reprocessing areas in Table 1;
  5. e) Additional material on heating and cooling source requirements;
  6. f) Provisions for water removal for local cooling and noncentral AHUs;
  7. g) New considerations for the placement of outdoor intakes and ethylene oxide removal requirements;
  8. h) Alignment of heating, cooling, and ventilation systems connected to appropriate emergency electrical power system with CSA Z32;
  9. i) Expanded requirements for audible and visual alarms for AIRs;
  10. j) Revisions to Clause 5.8 requirements for HVAC system upgrades associated with health care facility renovations or additions;
  11. k) Alignment of Clause 6 material on catastrophic events management with CSA Z8000;
  12. l) New provisions for flex duct;
  13. m) Requirements for ventilation of normally unoccupied service areas;
  14. n) Provisions for reduced operation of HVAC systems during unoccupied periods;
  15. o) New requirements for HEPA filter testing and performance verification; and
  16. p) Revised requirements for materials used for the lining of system components.

The 60-day Public Review process is meant as a way to get input from the broader health care community.  We invite you to take this opportunity to provide suggestions on the next edition of this important Standard. It is very important that key stakeholders review the draft and submit comments before the Standard is published next year.

To review the draft and post comments, please visit CSA Group’s Public Review site at:

For new visitors, a one-time registration is required. You may then comment directly online.


Public Review comments will be accepted until June 5th, 2019. 

For additional information or questions on the Public Review process, please feel free to contact Julianne Chow, Project Manager at This email address is being protected from spambots. You need JavaScript enabled to view it. or at 416-747-2632.