Ventilation in the 2019 California Energy Code
It is not unusual for California to be first and unique. Just one year after the 1973 oil embargo exposed this country’s reliance on foreign oil, California was the first state to implement a ...
Blower Door Cruise Control
The use of pressure differential diagnostics to measure and interpret air leakage is changing the way blower-door users approach buildings. [continue reading]
Infiltration: Just ACH50 Divided by 20?
Many researchers have sought to develop a correlation between a one-time pressurization test and an annual infiltration rate. [continue reading]
Leak Detectors: Experts Explain the Techniques
This article is an effort to bring together the ideas of several innovators who have invented methods of diagnosing duct leakage. [continue reading]
Two Favorite Test Methods, By the Book
The American Society for Testing and Materials (ASTM) has decided to improve protocols for two popular test methods for testing duct leakage in residences--the "blower door subtraction" technique and the "flow hood" technique. [continue reading]
In Search of the Missing Leak
With the use of blower doors, weatherization programs have improved cost-effectiveness by prioritizing air sealing work, developing effective inspection procedures for determining if work was done properly, and assessing the impact of air sealing on indoor air quality and moisture problems. [continue reading]
Introduction to Blower Doors
Air flow through a building can have a powerful impact on comfort, expense, and air quality. Blower doors provide a way to quantify air flow and the resulting heat loss, along with a way to pinpoint specific leaks. [continue reading]
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Our Blog Has Moved
Thanks for your interest in contributing a blog to the Building Performance Journal (formerly Home Energy magazine). We’re ...
Is Energy Efficiency an American Value?
Energy efficiency is good for the economy, good for families, good for workers, and good for the environment.