Keystone Enclosure Testing

About Us

Keystone Enclosure Testing provides independent blower door and duct leakage testing for new residential construction across New Jersey, Eastern Pennsylvania, and Delaware. We work directly with builders, developers, general contractors, and HVAC contractors who need reliable testing and clear documentation for code compliance, final inspections, permit closeout, and Certificates of Occupancy.

Our services include blower door testing, duct leakage testing for one or multiple HVAC systems, test reports, and certification paperwork. Keystone is a testing-only company, so we do not sell HVAC, insulation, air-sealing, or repair services.

Builders and contractors with recurring testing needs can ask about the Keystone Builder Partner Program and preferred volume pricing. Schedule online or call (877) 517-0004.