Building Science Blog Archive

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.

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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.

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Double-Duty Exhaust Fans: Good or Bad?

Based on the feedback we receive, 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?

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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. 

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RED/AirCycler Release Ventilation Cost Calculator, v2.0

RED and AirCycler just launched the revised version of the Annual Ventilation Cost Calculator. This innovative application can be used to determine the operation costs (fan-operation electricity and heating and cooling costs) for most ventilation systems installed in dwellings in any ZIP code location in the U.S.

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