Spotlight Article:
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 ...
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Blower Door Cruise Control
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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?
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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
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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
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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
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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
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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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Kristina Frunze
HVAC Industry Trends: 7 Things Every Contractor Should Know
The past year has seen many developments in HVAC technology and the industry as a whole. For contractors, understanding these ...
Laurie Stone
Equity and Climate: A Solution for Home Rentals
Lack of affordable housing and energy burdens plague many people and communities. Cities throughout the United States are looking for ...
