There are many ways to get to EnerGuide 80, and only one way to reliably measure it. Through a blower door test.
We've known for some time that the 2012 Building Code will lead to tighter regulation on the level of energy-efficiency needed for new home construction. It's now becoming clear how that will be enforced:
Another element to prepare for is mandatory air leakage testing, using a blower door test.
""Unless something dramatically changes, the expectation now is that every new home built will be subject to a door fan test, no matter which way you build – prescriptively, limited tradeoff, or performance." - Murray Frank, Building Science Instructor.
We now know that the new Building Code will be out in 2012.
