That’s incredibly aspirational though. The Passive House standard, the toughest building standard in the world can be passed with 0.6 ACH. Modern building codes tend to mandate somewhere around 3ACH and older houses would often have 15 - 25 ACH.
That’s incredibly aspirational though. The Passive House standard, the toughest building standard in the world can be passed with 0.6 ACH. Modern building codes tend to mandate somewhere around 3ACH and older houses would often have 15 - 25 ACH.