ASHRAE 170 Ventilation of Health Care Facilities Resources

ASHRAE 62.1 is a general ventilation standard for commercial and institutional buildings, setting minimum outdoor air and IAQ requirements. ASHRAE 170 is specifically designed for healthcare facilities, with more stringent requirements for air changes, pressure relationships, filtration (MERV 14A/16A), humidity control, and temperature — tailored to infection control in clinical environments.

ASHRAE 170 requires MERV 16A (Appendix J certified) filtration for operating rooms and high-acuity procedural spaces. For emergency rooms, invasive procedure rooms, and general treatment areas, MERV 14A is the minimum required rating. ECOairflow's M-Series provides both MERV 14A and 16A configurations to satisfy these requirements.

Yes, provided they meet ozone emission limits specified in ASHRAE 170 and carry Appendix J (ASHRAE 52.2) certification. ECOairflow's M-Series is UL 2998 Zero Ozone certified (below 0.0005 ppm), ETL listed, and MERV 14A/16A Appendix J certified, making it fully compliant for hospital ORs, ERs, and other clinical spaces.

ASHRAE 52.2 Appendix J is an in-situ performance protocol that verifies a filter maintains its rated MERV performance throughout its entire lifecycle — not just when new. For hospitals, this is critical because it ensures filtration efficiency never drops below the clinical safety threshold, whether the filter is powered, unpowered, or at any point in its service life.

ASHRAE 241 (2023) is an infection-risk mitigation standard applicable to all building types, while ASHRAE 170 is specific to healthcare. In hospitals, both standards may apply. ECOairflow's M-Series satisfies ASHRAE 241 infection-control filtration requirements at MERV 14A/16A and simultaneously meets ASHRAE 170 ventilation compliance, allowing specifying engineers to address both standards with a single filter solution.

Yes. ECOairflow's patent-pending M-Series single-pad design replaces both the MERV 8 pre-filter and the MERV 14/16 final filter in a traditional two-bank hospital configuration. Since the M-Series carries MERV 14A or 16A Appendix J certification, it satisfies the ASHRAE 170 filtration requirement while reducing pressure drop by up to 54% and simplifying maintenance.