Blower Door Test in Cresskill, NJ

How Is A Blower Door Test Conducted?

In blower door test in Cresskill, NJ, every exterior door and window is shut, while interior doors stay open to allow uniform airflow inside the building. One central exterior entry is selected, and an aluminum frame with a flexible fabric panel is installed securely. A calibrated fan is used to depressurize the home through the frame to 50 Pascals, representing the same pressure as a 20 mph wind.

When the fan pulls indoor air outward, fresh air from outside rushes in through leaks and weak spots. A sensitive device called a nanometer measures how the fan’s pressure relates to the home’s internal air pressure. The pressure data is turned into air changes per hour (ACH), a measure of how efficiently and tightly the home is sealed in NJ.

What Is A Passing Blower Door Test Score?

In Cresskill, NJ, new construction typically follows the 2015 International Energy Conservation Code (IECC) or an updated edition implemented by local codes. In most jurisdictions, 3 air changes per hour or less is the benchmark for acceptable blower door test results and energy efficiency. When your blower door test in Cresskill, NJmeets this requirement, you benefit from reduced energy bills and code compliance.

Why Do I Need A Blower Door Test?

NJ and local city codes follow the IECC (International Energy Conservation Code), which mandates blower door tests on residential buildings after construction or renovation. We often collaborate with home builders, contractors, and homeowners who require blower door test in Cresskill, NJ to meet energy efficiency standards and close permits. A duct leakage test may also be performed when ductwork or HVAC equipment extends beyond the thermal envelope. Learn more about energy code compliance.

With blower door test in Cresskill, NJ, homeowners can pinpoint hidden air leaks. The depressurization process makes them obvious, enabling better sealing and lower energy costs. In only a few hours, a blower door test can deliver a long-lasting impact on energy efficiency, comfort, and indoor performance throughout NJ’ changing seasons.

How To Pass A Blower Door Test:

• Anticipate potential air leaks before testing begins.
• Install a quality air barrier like Tyvek or Zip Sheathing and confirm that all joints and seams are completely taped.
• Apply the correct R-value insulation and verify that it’s properly fitted to seal the whole building envelope.
• Seal all penetrations in exterior walls using caulk or spray foam.
• Ensure doors and windows are properly installed, caulked, and weather-sealed.
• Close any gaps connecting conditioned and unconditioned spaces, such as those leading to basements, attics, or crawl spaces.
• Local permitting offices often offer official compliance checklists — review the Philadelphia sample here for reference.
• Local Energy Audits uses thermal imaging tools, caulk, and spray foam to detect and seal leaks directly on-site./li>
• Over 90% of cases result in a passing score within two hours, along with complete permit documentation.