Inside the World's Tightest House
August 30, 2013
Tom Marsik and Kristin Donaldson of Dillingham, Alaska, recently achieved the distinction of building the world's tightest residential building. The World Record Academy, an international organization that certifies world records, presented the award to their home for achieving a blower door test of 0.05 ACH50. The house has a heat recovery ventilator (HRV) that controls fresh air and humidity to this nearly airtight dwelling.
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