WE’re Talking Unity

New Xyla exceeds Passive House Air-Tightness Standard.

Posted By Unity Team • August 15 2015 • Comments On

We recently did a blower door test on a Xyla in northern New Hampshire to measure its air tightness—i.e., how “leaky” it was. The result was .38ACH@50 pa, which is well under the rigorous Passive House standard of .6 and almost seven times as tight as the strictest building code.

“ACH” stands for air changes per hour…how many times the inside air is replaced by outside air in an hour. “50 pa” stands for the pressure used during the test and roughly equals the pressure of a 20 mph wind. The lower the air changes per hour, the more airtight a house is.

While most of us understand the importance of the R-value of insulation for energy efficiency, minimizing air infiltration is just as important. (more…)

Tags: ACH | air quality | Air tightness | blower door test | insulation | Passive House | R-value | ventilation

UNITY HOMES 6 Blackjack Crossing, Walpole, NH 03608    •     tel: 603-756-3600 for custom design options: www.bensonwood.com
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