Is there an advantage or disadvantage to using the minimum performance period?
Using the shortest possible period to earn the credit will mean the fewest numbers to crunch and document. And I would think our best performance is in the most recent 3 months/12 months.
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Dan Ackerstein
PrincipalAckerstein Sustainability, LLC
LEEDuser Expert
819 thumbs up
October 31, 2011 - 12:36 am
I think the answer to this question is highly credit-specific, in the sense that for some credits, where the behavior or performance LEED is seeking is new to your building, the minimum performance period allows you to adopt the behavior and move to certification within a reasonable time frame. For other credits, where the behavior is something you may have been doing for years, a longer performance period may more accurately reflect the longer-term successes of your efforts, or things you have done in the recent past. My usual recommendation is to assume a 3-month performance period for all credits, and deviate from that minimum where necessary (EAp2) and where it benefits your project.
Hope that helps,
Dan