My project is a high-rise residential tower. The dwelling units satisfy the criteria as a natural ventilated space and are also installed with split unit air-conditioner for winter and summer. How can my space comply with the MERV 13 requirement?

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Dylan Connelly

Mechanical Engineer

Integral Group

LEEDuser Expert

342 thumbs up

Mon, 03/10/2014 - 20:24

Kent - Great question. The MERV 13 requirement only applies to "mechanically ventilated buildings." Assuming you have a mechanical conditioned and naturally ventilated space, then MERV 6-8 would be acceptable for the split units. If the unit is drawing outdoor air during in the winter and summer then MERV 13 filters would be required for this credit.

Kent Liu

LEEDuser Basic Member

0 thumbs up

Tue, 03/11/2014 - 01:45

Thank you for the reply. However, the reference guide mentioned about MERV 13 requirement "should be applied to process both return and outside air that is delivered as supply air." Essentially, split units are delivering return air as supply air. Would I be at risk of losing this point if I only uses MERV 6-8 in this case?

Karla Rangi

LEEDuser Basic Member

3 thumbs up

Thu, 03/20/2014 - 05:25

The requirement for MERV 13 filters for return air was removed in the Oct 2013 addendum: http://www.usgbc.org/leed-interpretations?keys=100000426

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