When Above Average Is Not Good Enough
Let’s imagine two neighboring families on a residential block—the Joneses and the Smiths. Their homes are of comparable size and age, and both are families of four, living typical middle-class lifestyles. ...
My initial reaction to the prospect of a computerized audit was sarcastic disdain--right, a computer is going to tell me what's wrong with a building! [continue reading]
The use of pressure differential diagnostics to measure and interpret air leakage is changing the way blower-door users approach buildings. [continue reading]
Many researchers have sought to develop a correlation between a one-time pressurization test and an annual infiltration rate. [continue reading]
This article is an effort to bring together the ideas of several innovators who have invented methods of diagnosing duct leakage. [continue reading]
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 mobile homes, the furnace is typically located in a tiny room in the middle of the structure. A distribution fan at the top of the furnace moves return air downward through a counter-flow heat exchanger to a plenum that connects to a single long supply trunk. [continue reading]
When air handlers and ducts are located in buffer zones like basements, energy and air quality problems associated with duct leaks--as well as the diagnostic procedures employed to evaluate them--tend to be quite complex and problematic. [continue reading]
“Why do you need to cool and heat the whole building? Why don’t you cool and heat ...