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]
The Home Performance Extensible Markup Language (HPXML) Data Dictionary and Transfer Standard have been gaining traction in the residential energy ...
For years the HVAC industry has relied on repeat visits to existing customers to generate new business. The service contract ...