Abstract
The high cost of one of the more expensive versions of the Class A home energy audit prompted a major utility company to examine two questions that have to date received surprisingly little careful attention: (1) Does receiving an audit result in more energy savings than not receiving an audit? (2) Can the energy savings resulting from more expensive versions of the Class A audit be achieved by less expensive versions? Both self-reported conservation behavior data and more objective kilo Watt hour consumption data were collected from subjects over a 12-month period following the audits. These data indicate that the answer to both of these questions is yes.

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