Blower Door Test in Gloucester township, NJ

How Is A Blower Door Test Conducted?

To conduct blower door test in Gloucester township, NJ, exterior doors and windows are closed properly, while interior doors remain open to help maintain even air movement. A central door to the outside is selected, and an adjustable aluminum frame with a fabric cover is installed there. Next, a calibrated fan is mounted on the frame to reduce indoor pressure to 50 Pascals — similar to the force of a 20 mph wind on the building.

When indoor air is extracted, outdoor air pushes in through every leak and small gap in the building. Using an advanced nanometer, we evaluate the pressure difference between the fan system and the home’s interior environment. These values are expressed as air changes per hour (ACH), a key measure of the home’s airtightness and its energy performance under NJ conditions.

What Is A Passing Blower Door Test Score?

In Gloucester township, NJ, compliance with the 2015 International Energy Conservation Code (IECC) or subsequent locally adopted versions is typically mandatory for residential properties. In most jurisdictions, 3 air changes per hour or less is the benchmark for acceptable blower door test results and energy efficiency. Satisfying this requirement in your blower door test in Gloucester township, NJ helps optimize energy use and ensures you meet local building standards.

Why Do I Need A Blower Door Test?

NJ, along with many city governments, enforces the IECC, which requires blower door test for residential projects after construction or renovation. We often collaborate with home builders, contractors, and homeowners who require blower door test in Gloucester township, NJ to meet energy efficiency standards and close permits. If ducts or HVAC units are located outside the thermal envelope, a duct leakage test may also be mandated. Learn more about energy code compliance.

With blower door test in Gloucester township, NJ, homeowners can detect where energy is being wasted. As the fan depressurizes the house, leaks are revealed, highlighting areas for sealing and savings. blower door test in Gloucester township, NJ provides homeowners with clear insights into energy loss. When the fan creates pressure differences, leaks are exposed, allowing for easy detection and repair. Although it’s a short process, a blower door test produces a long-lasting impact by improving comfort and lowering energy costs throughout NJ’ climate extremes.

How To Pass A Blower Door Test:

• Anticipate potential air leaks before testing begins.
• Use an air barrier system such as Tyvek or Zip Sheathing and verify that each seam is properly sealed with tape.
• Use insulation that has the designated R-value and confirm it’s properly applied throughout the building envelope for maximum efficiency.
• 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.
• Building departments in many areas share checklists for verifying compliance — download the Philadelphia version here as a sample.
• At Local Energy Audits, we utilize thermal imaging equipment, caulk, and spray foam to identify and fix air leaks during testing./li>
• Over 90% of projects pass within two hours, and we immediately provide the required paperwork to close out the building permit.