Air Flow Archives - GreenBuildingAdvisor

Designing Return Filter Grille Boxes

The key is having enough space to minimize pressure drop

Strategies for ensuring low pressure drop cross a high-MERV filter

Filters and ducts can work a lot better if HVAC designers and installers understand this simple physics formula

Here’s how Manual J software takes your inputs and gives you both the BTU/hour and cfm needed for each room

And under what conditions would it move exactly 2.5 tons of air?

You don’t always need to install individual returns, transfer grilles, or jumper ducts

For homes without dedicated return grilles in the bedrooms, this easy-to-install device provides a return air pathway

Finding the right balance of quantity, mixing, and noise

A Texas A&M study shows how much of a hit you take when you let flex duct sag

David Hill shared the secrets of good air flow at the 2015 Building Science Summer Camp