Blower Door Tests for New Residential Construction
Independent blower door tests for new residential construction in New Jersey, eastern Pennsylvania, and Delaware, generally within approximately two hours of Mount Laurel. Availability is confirmed for your exact project address.
What Does a
Blower Door Test Measure?
A blower door test measures how much air leaks through a home’s building enclosure. A calibrated fan creates a 50-pascal pressure difference, allowing us to measure leakage in CFM50 and calculate ACH50. The result is compared with the project’s applicable energy-code target and documented for project closeout.
For new residential construction, the result verifies whether the completed building enclosure meets the required airtightness level.
Are Blower Door Tests Required in
New Jersey and Pennsylvania?
Yes. Covered new residential construction in both states generally requires a blower door test.
New Jersey adopted the 2024 IECC with state amendments effective August 17, 2026. During the six-month grace period, a complete permit application may be submitted under the previously adopted 2021 IECC. The applicable code edition, approved plans, permit date, building type, and compliance path determine the project’s passing limit and documentation requirements.
Pennsylvania’s 2021-based Uniform Construction Code took effect January 1, 2026. The applicable target and documentation requirements can depend on the permit date, building type, compliance path, and enforcing jurisdiction.
See our Test Requirements page for current limits and official code sources.
Is Your Project Ready for a Blower Door Test?
Schedule the test after the building enclosure is substantially complete. Contact Keystone if you are unsure whether the project is ready.
Keystone handles the equipment, building configuration, measurement, and documentation on site.
- All exterior doors, windows, attic access panels, and other enclosure components are installed.
- Air sealing around plumbing, electrical, HVAC, and other penetrations is complete.
- Openings between conditioned and unconditioned areas are sealed.
- Electrical power is available, and the entire home, including attics, crawlspaces, and mechanical rooms, is accessible.
- Current plans or the project’s conditioned floor area and volume are available.
Ready to Schedule Your Blower Door Test?
Book online or call to confirm project readiness and availability.