Sheet Metal & Air Conditioning Contractors’ National Association


Shielding Fresh Air Ventilation Intakes

Mar 21, 2014

Shielding Fresh Air Ventilation Intakes

In buildings with moisture damage, the original source for these problems may be water entering through the fresh air ventilation intakes.

Often, it is relatively simple to shield air intakes from snow and rain ingress. However, it is best to consider this shielding at the planning stage, so that it’s possible to properly shield in the most effective way.

This article, “Shielding Fresh Air Ventilation Intakes” reprinted with permission from the ASHRAE Journal, presents general solution principles for shielding fresh air ventilation intakes against snow and rain inlet (entrainment).

© 2012 ASHRAE. Reprinted by permission from ASHRAE Journal, April, 2012.