Zone pressure diagnostics (ZPDs) are used to identify and measure series leaks, or leaks that pass through several zones of the house. For example, air leaking through the attic roof must first move from the living spaces into the attic through the attic floor. ZPDs measure the pressure difference between the living space and the bordering zone (such as the attic), and between the bordering zone and the outdoors. These bordering zones can also be basements, garages, kneewall areas, or particular rooms.

ZPD testing relies on the principle that the ratio of the pressure difference across the interior and exterior boundaries of a series leak is a direct function of their leakage area. Michael Blasnik developed the set of ZPD techniques known as the Blasnik methods. Ever since, these methods have become well established among weatherization crews,
with hundreds of users across the country. ...

Read more in David Bohac's Home Energy Article, "Zone Pressure Diagnostics" in the May/June, 2002 issue.

Tags: (zpds), blasnik, diagnostics, energy, home, method, pressure, tools, zone

Views: 94

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Shashank Kirloskar posted a blog post

Top 8 Solar Panel Manufacturers in India

Non-Renewable resources are reducing rapidly. Powering homes and offices through other means,…See More
3 hours ago
Avi Yashchin posted a blog post
4 hours ago
Laura Langham posted an event
Thumbnail

Residential Home Energy Efficiency Workshop - Greensboro, NC at Kathleen Clay Edwards Library – 1420 Price Park Drive, Greensboro, N.C. 27410

March 3, 2015 from 6:30pm to 8pm
Free Home Energy Conservation Workshop: Greensboro – 3/5/15Register for the Greensboro workshop…See More
10 hours ago
EnergyLogic Academy posted an event
Thumbnail

RESNET Rater Training Phase II at Denver, CO

May 11, 2015 to May 14, 2015
Join us in Beautiful Denver, CO!The field portion of HERS Rater Training is 4 days of field…See More
10 hours ago
Jim Gunshinan replied to Jim Gunshinan's discussion When your shower is in your kitchen...
"With more and more builders in crowded, expensive-to-rent-in cities like New York creating…"
10 hours ago
Home Energy Magazine's blog post was featured
10 hours ago
Profile IconBilly Ray Griffin and Lee Blanchard joined Home Energy Pros
11 hours ago
Home Energy Magazine posted a discussion
11 hours ago

© 2015   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service