Garbage bags can be pretty handy components of an HVAC contractor’s tool kit, research in 2003 at Lawrence Berkeley National Laboratory (LBNL) (see “Air Flow Measurements in the Bag,”HE Sept/Oct ‘02 p. 8).Toting around a laundry basket is also a good idea. Indeed, contractors can often diagnose HVAC system pressures more accurately by using these common household objects than they can using commercially available flow hoods.

We researched the use of garbage bags as a measurement tool for two main reasons. First, bag filling has the advantage that it gives a direct volumetric flow without relying on flow measurement techniques that only sample part of the flow or assume a degree of flow uniformity, as almost all of the other techniques do. Second, as a demonstration of high or low flows to homeowners—or builders and HVAC contractors—bag filling has a direct visual element that is
very appealing.

See: "Garbage Bags and Laundry Baskets" by Iain Walker, Home Energy, Nov/Dec, 2003

Views: 46

Replies to This Discussion

This photo is a bit hokey and contrived. They are in a shower. Why would there be a supply or return duct in the shower anyway? Perhaps they are doing something more kinky or just kidding around.



  • Add Videos
  • View All


Latest Activity

Diane Jackson posted a photo

"Drive Home"

Addison Homes spent a fun day with a film crew from the National Association of Home Builders. We…
3 hours ago
Paul Raymer posted a blog post

Healthy Home Evaluator Training

Fall River, MA     October 13, 2016…See More
7 hours ago
Diane Chojnowski updated an event

Better homes video series at Seventhwave

October 24, 2016 to January 26, 2017
9 hours ago
Profile Iconseoeleczo and Parfait Pouliotte joined Home Energy Pros
9 hours ago
Amber Vignieri's blog post was featured
9 hours ago
Sarah Holloway's blog post was featured
9 hours ago
Quinn Korzeniecki added a discussion to the group Building Performance Institute (BPI)

Creating a Home that is Right for You and Your Family

Today's prospective homeowners have the option of either buying an existing home or building one…See More
10 hours ago
Steven Lefler commented on Paul Scheckel's blog post Gas vs Induction Cooking Energy Comparison
"No one in government wants you to disconnect from the grid. All electric houses (ON Gird) with Time…"

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service