Blower Door Test in Millburn township, NJ

How Is A Blower Door Test Conducted?

While performing blower door test in Millburn township, NJ, technicians make sure exterior doors and windows are shut tight and interior doors are open for uniform pressure. A central exterior door is used as the setup point, where an adjustable aluminum frame and fabric panel are positioned. 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 air is pulled from the home, outside air finds its way in through cracks and unsealed openings. Using a sensitive instrument known as a nanometer, we measure the fan’s pressure against the home’s internal pressure. From these readings, the number of air changes per hour (ACH) is determined, revealing the home’s airtightness and performance efficiency in NJ.

What Is A Passing Blower Door Test Score?

In Millburn township, NJ, compliance with the 2015 International Energy Conservation Code (IECC) or subsequent locally adopted versions is typically mandatory for residential properties. To meet efficiency standards in most areas, homes should record 3 air changes per hour or less on a blower door test. Passing this threshold during your blower door test in Millburn township, NJ ensures both energy savings and full compliance with local regulations.

Why Do I Need A Blower Door Test?

In NJ, both state and local jurisdictions follow the IECC (International Energy Conservation Code), requiring blower door test for new and remodeled homes. We often collaborate with home builders, contractors, and homeowners who require blower door test in Millburn township, NJ to meet energy efficiency standards and close permits. You might also need a duct leakage test if HVAC systems or ducts are positioned outside the property’s thermal envelope. Learn more about energy code compliance.

A blower door test in Millburn township, NJ helps homeowners discover inefficiencies. Depressurizing the home makes leaks more noticeable and highlights where energy can be conserved. A blower door test usually takes just a few hours but delivers a long-lasting impact on your home’s comfort, performance, and efficiency—particularly during NJ’ hot summers and cool winters.

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.
• 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.
• Ensure all penetrations between conditioned and unconditioned areas—like attics, basements, and crawl spaces—are tightly sealed.
• Local code departments usually provide a checklist to assist with compliance — see the Philadelphia example here.
• With caulk, spray foam, and advanced thermal imaging, Local Energy Audits locates and seals leaks efficiently on-site./li>
• In most situations—over 90% of the time—we get a passing score within two hours and finalize all required paperwork.