EQ6.2 Return air flow

mike diess

Engineer

LNI, inc.

LEEDuser Basic Member

18 thumbs up

February 1, 2011

EQ6.2 a) states:"Size the opening to 1 sq inch per cfm of supply air (this area may include free area undercut below door)." When using a grille are they specifying gross or net area? Our firm typically specifies the transfer grilles by gross area.

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Rob Moody

consultant, USGBC LEED® Faculty™, LEED® AP Homes, RESNET HERS Quality Assurance Designee

Organic Think Inc

LEEDuser Basic Member

3 thumbs up

Fri, 03/25/2011 - 00:02

I asked Asa Foss, the USGBC LEED for Homes Technical Director. Asa said that EQ 6.2 references the free, or net area of the grille. That is specified in EnergyStar Version 3 and EPA's Indoor airPlus programs.