This is a legacy version of the WELL Building Standard. Please check the latest version here.
   
  1. Air
  2. Ventilation effectiveness

Ventilation effectiveness

Features/Air/Feature 03

Ventilation effectiveness

Intent: 

To ensure adequate ventilation and high indoor air quality.

03: Ventilation effectiveness
    Post Date: 27 May, 2020
    Status: Approved

    To utilize the following AAP, projects seeking to use natural ventilation to meet Part 1 must meet the following requirements:
    - The project is located in a country listed in the "lower-middle" or "low" income groups as per the 2016 analysis according to the World Bank Atlas Method.
    - The project achieves certification under a qualifying pre-approved green building program.
    - The project achieves Feature 18.

    Then project may use the Natural Ventilation Procedure (as described in ASHRAE 62.1-2013) for determining ventilation compliance in Part 1 without first determining the quality of the outdoor air.

    A project using this AAP is limited to Silver level certification.
    Post Date: 01 May, 2019
    Status: Approved

    Multifamily residential projects may achieve Feature 03, Part 4 by ventilating lobbies and corridors via infiltration from pressurized dwelling units rather than dedicated supply air. Infiltration into these spaces must meet or exceed 0.3 L/s/m².
    A professional narrative must also be provided which indicates pressurization levels in dwelling units and demonstrates sufficient infiltration into corrdidors and/or lobbies.
    Post Date: 29 May, 2018
    Status: Approved

    Where projects are restricted from implementing a demand-controlled ventilation system or are unable to retrofit the existing ventilation system to be demand-controlled, the requirements of Feature 03 Part 2 may be met through the following conditions for outdoor air supply rate, whichever is more stringent:
    1. Exceed the ventilation rates set in ASHRAE 62.1-2013 (Ventilation Rate Procedure or IAQ Procedure) by 40%. Note that if this feature part applies to more than 50% of the total floor area at the project site, projects are not eligible to receive points for Feature 15 Part 1a.
    2. Provide a ventilation supply rate of 12 L/s (25 CFM) per person or higher.