
A timeline for involving a HERS rater at each phase so testing and compliance stay on track.
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A timeline for involving a HERS rater at each phase so testing and compliance stay on track.

What duct leakage testing measures, how it affects HVAC performance, and where it fits into Massachusetts code compliance.

A clear overview of the Stretch Code, how it differs from the base code, and what builders need to do to comply.

A plain-English guide to the HERS Index, how the score is calculated, and why it matters for Massachusetts homeowners and builders.
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