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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 promote safe and healthy homes.This nationally approved standard identifies:

• 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 with regards to energy efficiency, water conservation, occupant comfort, and indoor air quality are established. Improvement opportunities are presented to the homeowner so that they can selectthe improvements that meet their needs. The standard describes the minimum requirements for the practitioners that effect the selected improvements, and the subsequent verification that the performed work is in compliance to industry standards.