If you’re a homeowner, whom do you call when you find mold in a closet and on the ceiling of a bathroom? How about when paint starts peeling on your dining room wall? Whom do you call when there’s standing water in your crawl space? Whom do you think to contact when it’s getting harder and more expensive to keep the house warm in the…

In the 1970s, Princeton’s Twin Rivers Project found that the behavior of the occupant is a determining factor of the energy used in a home. Families living in identical units (floor plans, furnaces, and appliances) had widely varying energy use. In fact, when new occupants moved into previously occupied units, their energy use was…