Beyond the Blower Door: Demystifying Whole Building Airtightness Testing

RDH Building Science’s David Stanton (Senior Engineer) and John Mann (CPHC, Phius Verifier, HERS Rater) present the essentials of airtightness testing—what it is, why it matters, and how to succeed. This event took place on November 18, 2025. It was made possible by generous support from the Sponsors of Mass Save.

This event took place on November 18, 2025 at the BSA Space in Boston, MA. It was supported by the Sponsors of Mass Save.