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Existing Home Evaluation and Performance Improvement establishes the minimum criteria by which deficiencies in existing homes are assessed and home performance improvements are implemented.

ACCA 12-QH treats the home as one system comprised of many sub-systems. It is understood that improvements to one sub-system may impact other sub-systems.

In identifying and implementing the improvements, attention is given to promoting safe and healthy homes. This nationally approved standard identifies the following:

• What is included in an audit?
• Improvement opportunities that need to be assessed.
• How scopes of work are posted.
• How work is to be performed.
• What industry-recognized procedures need to be followed.
• How improvement objectives are to be met.

Minimum requirements to evaluate a residence concerning energy efficiency, water conservation, occupant comfort, and indoor air quality are established. Improvement opportunities are presented to the homeowner so that they can select the improvements that meet their needs. The standard describes the minimum requirements for the practitioners that affect the selected improvements and the subsequent verification that the performed work complies with industry standards.

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