Hospitality-EBOM-v4 EQc2: Enhanced indoor air quality strategies

  • Several strategies available under one credit

    Teams can earn one point for installing and maintaining permanent entryway systems that meet the 10-foot length requirement. This strategy is typically straightforward and cost-effective for projects to achieve. However, it’s also fairly common for aesthetic considerations trump the benefits that entryway systems provide, so be sure to check with all relevant parties before counting on this point.

    A number of additional strategies are offered under Option 2 (although you can only earn one point total under this option). The strategies outlined in the credit requirements can be achieved with varying degrees of difficulty, and some will likely be expensive to implement if you don’t already have compliant systems in place. Be sure to review and understand the requirements of each strategy (both the establishment and performance components) within the context of your building before committing to this option.

    What’s New in LEED v4

    • Portions of the following LEED 2009 credits have been combined into a single credit:  EQc1.2 Indoor Air Quality Best Management Practices—Outdoor Air Delivery Monitoring, EQc1.4: Indoor Air Quality Best Management Practices—Reduce Particulates in Air Distribution, and EQc3.5: Green Cleaning—Indoor Chemical and Pollutant Source Control.
    • There is now additional guidance for warehouses, distribution centers, data centers, health care facilities, and residential projects.
    • USGBC added additional options for naturally ventilated spaces.
    • Teams have the option to use filtration media that meet CEN Standard EN 779–2002, Particulate Air Filters for General Ventilation, Determination of the Filtration Performance.

    FAQs

    Do I have to achieve Option 1 if I want to pursue Option 2?

    No, Option 1 and Option 2 are separate. You can pursue either option without earning the other, or both if you like. Achieving both options is worth two points total. 

    Can we earn Option 2 by adopting a phase-out plan of our old filters and replacing them with MERV 13 filters?

    No, in order to earn the credit, all of the filters must be replaced with MERV 13 filters prior to the performance period. Additionally, teams must provide documentation confirming that filters were maintained and/or replaced during the performance period according to the manufacturer’s recommendations.

  • EQ Credit 2: Enhanced indoor air quality strategies

    Intent

    To promote occupants’ comfort, well-being, and productivity by improving indoor air quality.

    Requirements

    Option 1. Entryway systems (1 point)
    Establishment

    Have in place permanent entryway systems at least 10 feet (3 meters) long in the primary direction of travel to capture dirt and particulates entering the building at regularly used exterior entrances. Acceptable entryway systems include permanently installed grates, grilles, slotted systems that allow for cleaning underneath, rollout mats, and any other materials manufactured as entryway systems with equal to or better performance. Maintain all on a weekly basis.

    Performance

    Confirm that entryway systems have been maintained on a weekly basis.

    Option 2. Additional enhanced IAQ strategies (1 point)

    Comply with the requirements of at least one of the following.

    Filtration for mechanically ventilated spaces
    Establishment

    Each ventilation system that supplies outdoor air to occupied spacesEnclosed space intended for human activities, excluding those spaces that are intended primarily for other purposes, such as storage rooms and equipment rooms, and that are only occupied occasionally and for short periods of time. Occupied spaces are further classified as regularly occupied or nonregularly occupied spaces based on the duration of the occupancy, individual or multioccupant based on the quantity of occupants, and densely or nondensely occupied spaces based on the concentration of occupants in the space. must have particle filters or air cleaning devices. These filters or devices must meet one of the following filtration media requirements:

    • minimum efficiency reporting value (MERVMinimum Efficiency Reporting Value (MERV) rating is an American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) measurement scale which rates the effectiveness of air filters. ) of 13 or higher, in accordance with ASHRAE Standard 52.2–2007;
    • Class F7 or higher as defined by CEN Standard EN 779–2002, Particulate Air Filters for General Ventilation, Determination of the Filtration Performance
    • [East Asia ACP: Filtration Media]

    Establish a regular schedule for maintenance and replacement of filtration media according to the manufacturer’s recommended interval.

    Performance

    Follow the schedule for maintenance and replacement of filtration media.

    Carbon Dioxide Monitors
    Establishment

    Have in place CO2 monitors in all densely occupied spacesAreas with a design occupant density of 25 people or more per 1,000 square feet (40 square feet or less per person).. Rooms smaller than 150 square feet (14 square meters) are exempt. CO2 monitors must be between 3 and 6 feet (900 and 1 800 millimeters) above the floor.

    Configure the system to generate a visual alarm to the system operator if the differential CO2 concentration in any zone rises more than 15% above that corresponding to the minimum outdoor air rate required in the ventilation section of EQ Prerequisite Minimum Indoor Air Quality Performance.

    Test and calibrate CO2 sensors to have an accuracy of no less than 75 parts per million or 5% of the reading, whichever is greater.

    Performance

    Sensors must be tested and calibrated at least once every five years or per the manufacturer’s recommendation, whichever is shorter.

    Monitor CO2 sensors with a system configured to trend CO2 concentrations in intervals no greater than 30 minutes.

    Outdoor air monitoring for mechanically ventilated spaces
    Establishment

    For variable air volume systems, provide a direct outdoor airflow measurement device capable of measuring the minimum outdoor air intake flow for at least 80% of the outdoor air flow. This device must measure the minimum outdoor air intake flow with an accuracy of +/–10% of the design minimum outdoor airflow rate required in the ventilation section of EQ Prerequisite Minimum Indoor Air Quality Performance. An alarm must indicate when the outdoor airflow value varies by 15% or more from the outdoor airflow setpoint.

    For constant-volume systems, balance outdoor airflow to the design minimum outdoor airflow rate required in the ventilation section of EQ Prerequisite Minimum Indoor Air Quality Performance, or higher. Install a current transducer on the supply fan, an airflow switch, or similar monitoring device.

    Performance

    Calibrate all measurement devices within the manufacturer’s recommended interval.

    Outdoor air monitoring for naturally ventilated spaces
    Establishment

    Provide a direct exhaust airflow measurement device capable of measuring the exhaust airflow. This device must measure the exhaust airflow with an accuracy of +/–10% of the design minimum exhaust airflow rate. An alarm must indicate when airflow values vary by 15% or more from the exhaust airflow setpoint.

    Performance

    Calibrate all measurement devices within the manufacturer’s recommended interval.

    Alarmed openings for naturally ventilated spaces
    Establishment

    Provide automatic indication devices on all openings intended to meet the minimum opening requirements. An alarm must indicate when any one of the openings is closed during occupied hours.

    Performance

    None.

    Alternative Compliance Paths (ACPs)

    East Asia ACP: Filtration Media

    Projects in East Asia may use filtration media classified as high efficiency (高中效过滤器) or higher as defined by Chinese standard GB/T 14295-2008 (空气过滤器).

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Mar 26 2017
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