Building Science Blog Archive
ASHRAE 62.2 Alternative Compliance Path
62.2 Compliance Paths1 ASHRAE 62.2 has two compliance paths for sizing dwelling-unit ventilation. Normal compliance may be used for new or existing dwellings, whereas alternative compliance may be used
Air Leakage Metrics, A Rising Star
As new and existing buildings become tighter as a result of our attempts to save energy and slow global climate change, the ability to measure building tightness and convert the tightness to a useful metric becomes more important.
Effective Zone Pressure Diagnostics
Zone Pressure Diagnostics (ZPD) can be a useful and effective tool for determining the effectiveness of a designated pressure barrier. What can you do to increase the accuracy – or reduce uncertainty – of your results? Following these simple rules will help you hit your target.
Double-Duty Exhaust Fans: Good or Bad?
The installation of double-duty exhaust fans in existing dwellings is common. This practice can save money and time on the job and provides a simpler ventilation solution for the occupants. But is it a good idea?
Bees Benefit from RED Tool
It’s getting cold in the Sandhills of Nebraska, so Ed Dekleva, a civil engineer, is becoming concerned about the conditions inside his beehives.
RED/AirCycler Release Ventilation Cost Calculator, v2.0
RED and AirCycler just launched the revised version of the Annual Ventilation Cost Calculator.
