Photo of High Performance Homes, Chamberlain Court #75, Gettysburg, PA.

Case study of a DOE 2015 Housing Innovation Award-winning production home in the cold climate that got a HERS 37 without PV, or HERS 23 with PV, with R-24 SIP walls, basement with R-10 under slab, and R-15 unfaced batt on walls, sealed attic with R-49 open-cell spray foam under roof deck; ground source heat pump COP 4.4.