Harley Builders are currently working on a certified Passive House in Christchurch. The Blower
Door test was successful and the result was: 0.35 airchanges/hour. To get the certification of a
Passive House, we usually need 0.60 airchanges/per hour. That is a great result for Harley Builders.
If you want to learn more about a Blower Door Test please click here