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An Energy Retrofit in Stages
I'm a building energy consultant in central Wisconsin. I recently had a chance to perform a major energy retrofit on a modest ranch-style house just south of Lacrosse, Wis.
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HRV preferences
I'm wondering if anyone has opinion on HRV brands. We have used ultimate air (actually ERV) and Lifebreath. We are courting the idea of Zender but have had bad experiences with imported high performance products, mostly on service. We will be building a passive house and the HRV is central to the building technology. Any north american brands that can
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