855773520-LEED-v5-ID-C-Reference-Guide-Launch-Edition-1 - Page 308
Extracted Content
Indoor Environmental Quality Prerequisite
FUNDAMENTAL AIR QUALITY
EQp2
REQUIRED
INTENT
To design for above-average indoor air quality (IAQ) to support occupant health and well-being.
REQUIREMENTS
| Achievement pathways | Points |
|---|---|
Commercial Interiors | N/A |
Investigate Regional and Local Air Quality | |
AND | AND |
Ventilation and Filtration Design | Ventilation and Filtration Design |
AND | AND |
Entryway System Designs | Entryway System Designs |
Comply with the following requirements:
Investigate Regional and Local Air Quality
Investigate outdoor air quality in accordance with ASHRAE Standard 62.1-2022, Sections 4.1– 4.3.
AND
Ventilation and Filtration Design
Meet the requirements of ASHRAE Standard 62.1-2022, S ections 5 and 6. Use the ventilation rate procedure, the IAQ procedure, the natural ventilation procedure, or a combination thereof. Comply with the following additional provisions:
Filtration Each central HVAC system within the project’s scope of work that supplies outdoor air and/or recirculated air to regularly occupied spaces must meet one of the following:
-
Minimum efficiency reporting value of 13, in accordance with ASHRAE Standard 52.2-2017 ; OR
-
Equivalent filtration media class of ePM1 50%, as defined by ISO 16890-2016, “Particulate Air Filters for General Ventilation — Determination of the Filtration Performance.”
U.S. Green Building Council LEED v5 Reference Guide for Interior Design and Construction, April 2025 Launch Edition 297