Blower Door Test in Merchantville borough, NJ

How Is A Blower Door Test Conducted?

Before blower door test in Merchantville borough, NJ, every exterior door and window is closed securely, while interior doors stay open to let air move evenly around the home. A single central exterior door is designated, where the blower door’s aluminum frame and fabric panel are set up. A calibrated fan is then attached to the frame and used to depressurize the home to 50 Pascals, which is about the same as a steady 20 mph wind pushing against the structure.

When the fan starts pulling air out, external air enters through the smallest cracks and leakage points. A sensitive nanometer helps us measure and compare the pressure created by the fan with the interior air pressure. These results are transformed into air changes per hour (ACH), an indicator of the home’s airtightness and its efficiency in NJ conditions.

What Is A Passing Blower Door Test Score?

In Merchantville borough, NJ, residential buildings must meet the benchmarks set by the 2015 International Energy Conservation Code (IECC) or any newer codes adopted locally. A result of 3 air changes per hour or less is generally required in most areas to confirm the home’s energy efficiency. Passing this threshold during your blower door test in Merchantville borough, NJ ensures both energy savings and full compliance with local regulations.

Why Do I Need A Blower Door Test?

Both NJ and local jurisdictions adopt the IECC energy code, making blower door test mandatory for new and renovated residential structures. Our certified technicians assist home builders, contractors, and homeowners with blower door test in Merchantville borough, NJ to meet energy requirements and wrap up permit approvals. You may also need a duct leakage test if your ductwork or HVAC equipment lies outside the home’s thermal envelope. Learn more about energy code compliance.

By performing blower door test in Merchantville borough, NJ, homeowners can identify where conditioned air escapes. Depressurization makes leaks visible, uncovering ways to enhance comfort and efficiency. Typically completed within a few hours, a blower door test provides a long-lasting impact on comfort, energy efficiency, and overall home performance in NJ’ varied climate.

How To Pass A Blower Door Test:

• Anticipate potential air leaks before testing begins.
• Use Tyvek or Zip Sheathing as your air barrier and carefully tape all seams to prevent air leakage.
• Install insulation with the appropriate R-value and ensure it is correctly fitted across the entire 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 and seal every opening between heated or cooled spaces and unconditioned areas such as basements, attics, and crawl spaces.
• Most building departments provide detailed compliance resources — view the Philadelphia checklist example here.
• Local Energy Audits arrives fully equipped with thermal imaging, caulk, and spray foam to detect and seal leaks in one visit./li>
• Over 90% of cases result in a passing score within two hours, along with complete permit documentation.