Blower Door Test in Hamilton township (Mercer), NJ

How Is A Blower Door Test Conducted?

During blower door test in Hamilton township (Mercer), NJ, exterior openings are closed securely, and interior doors are left open to maintain even air circulation across the house. 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 pulls air out, outdoor air enters the house through cracks, openings, and unsealed areas. Using a nanometer device, we assess how the pressure from the fan differs from the home’s natural air pressure. These measurements are used to calculate air changes per hour (ACH), which reflects the home’s airtightness and performance under NJ weather.

What Is A Passing Blower Door Test Score?

In Hamilton township (Mercer), NJ, new construction typically follows the 2015 International Energy Conservation Code (IECC) or an updated edition implemented by local codes. Typically, a passing blower door test result is 3 air changes per hour or lower, which indicates good energy efficiency. Passing this threshold during your blower door test in Hamilton township (Mercer), NJ ensures both energy savings and full compliance with local regulations.

Why Do I Need A Blower Door Test?

Following the IECC guidelines, NJ and many local jurisdictions require blower door test on newly built or renovated residential dwellings. We proudly serve home builders, contractors, and homeowners who need blower door test in Hamilton township (Mercer), NJ to pass inspections and fulfill energy code obligations. In some cases, a duct leakage test is needed if ducts or HVAC systems lie outside the home’s thermal envelope. Learn more about energy code compliance.

Performing blower door test in Hamilton township (Mercer), NJ allows homeowners to identify and fix leaks. The test makes air infiltration visible, uncovering opportunities to reduce energy loss. This simple test, completed in a few hours, creates a long-lasting impact on your home’s efficiency and comfort during NJ’ hot and cold months.

How To Pass A Blower Door Test:

• Anticipate potential air leaks before testing begins.
• Use a trusted air barrier like Tyvek or Zip Sheathing, ensuring all joints and seams are properly taped and sealed.
• Place insulation with the accurate R-value and check for proper installation and full coverage in 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.
• Seal every transition point between conditioned and unconditioned environments, including attics, crawl spaces, and basements.
• Many cities provide compliance checklists through their building departments — see the Philadelphia version here.
• Using thermal imaging technology along with caulk and spray foam, Local Energy Audits identifies and seals leaks during the inspection./li>
• More than 90% of the time, we deliver a passing score in under two hours and issue all documents needed for permit approval.