Some buildings have incompatible mechanical systems. This stems from both a lack of available products that physically fit in filter housings and increased resistance to airflow, known as “pressure drop.” A
MERV ratings are measured by ASHRAE Standard 52.2 and range from 1–16, rating the filter’s ability to remove small particulates in the ventilation system. Sixteen is the highest level of filtration available as measured by ASHRAE 52.2.
The intent of a proposed innovation credit cannot be identical to or repetitive of the intent of an existing LEED credit within the EBOM rating system. For example, installing a cutting-edge, ultra-high-efficiency chiller is not an appropriate candidate for an IO credit, because the energy savings resulting from its employment are already captured by EAc1.
In LEED 2009, a credit interpretation ruling (CIR) is project-specific, therefore is neither precedent-setting nor published for other projects to view.
Project teams seeking pre-approval for an IO strategy may submit a credit interpretation ruling (CIR) explaining the proposed approach in as much detail as possible.
Innovation strategies should, as a rule, provide quantifiable environmental benefits. ID credits are not awarded solely for the use of specific products or technologies.
Additional opportunities for Option 2: Exemplary Performance can be earned by expanding the benefits of an existing LEED credit. Satisfy more than one compliance path, or expand the reach of existing credits by including off-site participants or activities.
The rule of thumb for exemplary performance is: Achieve double the credit requirements or the next incremental threshold. Credits allowing exemplary performance are noted throughout the LEED-EBOM Reference Guide, along with the threshold required to earn an IO point. This information is also provided on applicable LEED credit forms, which makes documenting exemplary performance very easy.
