Ventilation in new builds—are we overlooking something important?

I've used those angled covers on a couple properties too, and honestly, I haven't noticed any major airflow issues. But I do remember one place where we got a bit carried away—raised the vents pretty high to dodge snow buildup—and ended up with some weird whistling noises whenever the wind picked up. Tenants joked it was haunted...so yeah, lesson learned there.

I had one job where we raised the vents slightly, and it definitely cut down on snow blockage...but I wondered if it impacted ventilation efficiency at all.

I think as long as you're not going crazy with height or angles, you're probably fine. A little bit of elevation hasn't seemed to hurt airflow noticeably for me. But if you start hearing ghostly whistling at night, you might've gone too far, haha.