LBNL analyzed the air leakage measurements from 134,000 single-family detached homes in the US.
This calculator computes the expected air leakage distribution for homes with selected characteristics.
The predictions are based on results from the multivariate regression.
Floor Area (sqft)
Ceiling Height (ft)
(calculation assumes house height = ceiling height + 2 ft)
Weatherization Assistance Program (WAP) qualified?
Home rated for energy efficiency
(e.g. ENERGY STAR certified home)?
See IECC climate zone map
also residential energy code requirements
Duct System Location