This determines current leakage rates and sources of air leakage. After the assessment, the costs and energy savings for each possible energy conservation opportunity are identified and the cost-effective opportunities are selected. House repairs necessary for the proper performance of selected measures are also identified. Once energy conservation opportunities are identified, experienced installers trained on the latest energy tools and techniques make the repairs and install the improvements. For example, crews equipped with blower doors seal air leakage sites in the building envelope and ducts.
Crews then install cost-effective energy conservation measures such as attic and duct insulation.
Energy education for the occupants is a complementary element of a comprehensive weatherization program. This energy education instructs people in the proper operation and maintenance of new or existing energy systems so that the full potential of these systems is realized. Topics frequently covered in energy education to occupants include filter changing, thermostat operation, strategies to reduce cooling load such as closing window shares, and use of the ventilation systems.