The base building HVAC system uses 100% outside air. Therefore there are no return grilles. I am assuming that the requirement for filtration then is not applicable?
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Michelle Halle Stern
Senior Sustainability ConsultantGreenwood Consulting Group
120 thumbs up
September 9, 2015 - 11:07 am
If there is not a way for contaminants to get back into the ventilation system, you would meet the intent, and I would assume you are right. However, I'd prefer that mechanical engineer answer this question.
Dylan Connelly
Mechanical EngineerIntegral Group
LEEDuser Expert
472 thumbs up
September 10, 2015 - 7:37 pm
Thanks Michelle
That's correct for this credit - but you'll also need to meet the ASHRAE standard minimum of MERV 6 before a cooling coil (if applicable). IEQp1 requires that you meet ASHRAE standards.
I'd recommend MERV 8 anyway - they are practically as cheap and similar pressure drop.