ventilation standard

ASHRAE updates healthcare facility ventilation standard

The 2021 edition delivers critical guidance for designers and operators of these frontline facilities and incorporates 17 changes to the standard.
Tuesday, May 11, 2021

ASHRAE has released an updated edition of ANSI/ASHRAE/ASHE Standard 170, Ventilation of Health Care Facilities. The standard offers guidance, regulation, and mandates to designers of healthcare facilities.

The 2021 edition delivers critical guidance for designers and operators of these front-line facilities and incorporates 17 addenda to the 2017 edition of the standard.

Changes include:

  • Expanded requirements to allow airborne infectious isolation room exhaust discharge to general exhaust under certain conditions
  • Revised scope, with improved guidance on thermal comfort conditions provided
  • Extensive modifications to address the Outpatient and Residential sections
  • Extensive revisions to air filtration requirements
  • Addition of new columns in the ventilation tables to prescribe filtration requirement and designate unoccupied turndown
  • Expanded guidance on separation distance requirements for varied intake and exhaust arrangements, coordinating with related ASHRAE Standard 62.1 data
  • Improved guidance related to behavioural and mental health

To purchase ANSI/ASHRAE/ASHE Standard 170-2021, Ventilation of Health Care Facilities, visit the ASHRAE Bookstore or contact ASHRAE Customer Service by phone at 1-800-527-4723 (United States and Canada), 404-636-8400 (worldwide), or fax 678-539-2129.

RELATED: ASHRAE provides updated airborne transmission guidance

About ASHRAE

Founded in 1894, ASHRAE is a global professional society committed to serving humanity by advancing the arts and sciences of heating ventilation, air conditioning, refrigeration, and their allied fields. As an industry leader in research, standards writing, publishing, certification and continuing education, ASHRAE and its members are dedicated to promoting a healthy and sustainable built environment for all, through strategic partnerships with organizations in the HVAC&R community and across related industries.

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