Blower Door Test in South Brunswick, NJ

How Is A Blower Door Test Conducted?

For accurate blower door test in South Brunswick, NJ, technicians close all exterior openings and keep interior doors open to balance airflow throughout the house. A central exterior door is picked, where the technician fits an adjustable aluminum frame and fabric panel for airtight testing. 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. Using a sensitive instrument known as a nanometer, we measure the fan’s pressure against the home’s internal 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 South Brunswick, NJ, homes are designed to meet or exceed the 2015 International Energy Conservation Code (IECC) or the latest locally adopted standards. In most cases, passing the blower door test means reaching 3 air changes per hour or less, proving efficient home sealing. Meeting this level during your blower door test in South Brunswick, NJ supports energy efficiency and verifies that your home meets local codes.

Why Do I Need A Blower Door Test?

The State of NJ and numerous local municipalities adhere to the IECC (International Energy Conservation Code), which mandates blower door test for all newly built or renovated residential homes. We work closely with home builders, contractors, and homeowners who need blower door test in South Brunswick, NJ to ensure compliance and successful project completion. A duct leakage test is often required whenever ducts or HVAC units are found outside the building’s thermal envelope. Learn more about energy code compliance.

Homeowners gain major advantages from blower door test in South Brunswick, NJ. As the fan depressurizes the home, incoming air through leaks becomes easier to detect, revealing problem spots and potential energy-saving improvements. 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.
• Use a reliable air barrier like Tyvek or Zip Sheathing and make sure all seams are securely taped.
• Use insulation featuring the proper R-value and verify complete, gap-free coverage across the 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 gaps and penetrations between conditioned zones and unconditioned sections like attics, basements, and crawl spaces.
• Many building departments provide step-by-step compliance guides — you can find the Philadelphia example here.
• Local Energy Audits uses professional-grade thermal imaging, caulk, and spray foam to locate and close leaks during the visit./li>
• More than 90% of the time, we deliver a passing score in under two hours and issue all documents needed for permit approval.