The Recovery Act Evaluation was performed to provide information on the costs and benefits of WAP services in different parts of the country and for different types of housing. It was also performed to provide a comprehensive picture of the Program (including the characteristics of the clients, housing stock, and service providers), assess program administration, document experiences during the Recovery Act period, and conduct several special studies.

The Retrospective Evaluation was performed to provide information on the costs and benefits of WAP services in different parts of the country and for different types of housing. It was also performed to provide a comprehensive picture of the Program (including the characteristics of the clients, housing stock, and service providers) and assess program administration.

The AZ Home Performance with ENERGY STAR program (AZHPwES) requires that participating contractors demonstrate a high level of building science knowledge and maintain the highest standards of technical performance and customer service as described in the contractor requirements.