1. I have read that humans need 15 CFM of fresh air. How does that number translate to blower door test results for an average house? In other words, what is the ASHRAE-accepted cutoff point in a blower door test at which mechanical ventilation would be required? Assume a family of 4 if necessary.
2. Is there a website through which I can locate a local, reputable, qualified blower door contractor?
2. Is there a website through which I can locate a local, reputable, qualified blower door contractor?
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