Blower Door Test in Sharon Hill, PA

How Is A Blower Door Test Conducted?

To perform blower door test in Sharon Hill, PA, all exterior doors and windows are tightly sealed, while interior doors remain open to promote balanced airflow throughout the home. A main exterior door is selected for setup, with an adjustable aluminum frame and fitted fabric panel placed in position. Once the frame is in place, a calibrated fan is used to bring the home’s pressure down to 50 Pascals — about the same as a 20 mph wind on the structure.

As the fan exhausts indoor air, outside air starts seeping into the home through small leaks and gaps. A nanometer is used to detect and compare the pressure created by the fan with the air pressure inside the structure. The collected data converts to air changes per hour (ACH), demonstrating how tightly sealed and efficient the home remains in PA climates.

What Is A Passing Blower Door Test Score?

Construction in Sharon Hill, PA must comply with the 2015 International Energy Conservation Code (IECC) or updated versions recognized by local authorities. In most jurisdictions, 3 air changes per hour or less is the benchmark for acceptable blower door test results and energy efficiency. Passing this requirement during a blower door test in Sharon Hill, PA keeps your home efficient and aligned with local building code standards.

Why Do I Need A Blower Door Test?

PA and several of its municipalities comply with the IECC (International Energy Conservation Code), mandating blower door test for new or updated homes. Our certified technicians assist home builders, contractors, and homeowners with blower door test in Sharon Hill, PA to meet energy requirements and wrap up permit approvals. A duct leakage test may also be necessary if any ducts or HVAC systems are positioned outside the building’s thermal envelope. Learn more about energy code compliance.

With blower door test in Sharon Hill, PA, homeowners can pinpoint hidden air leaks. The depressurization process makes them obvious, enabling better sealing and lower energy costs. A blower door test takes only a short time to complete but can have a lasting effect on your home’s comfort and energy efficiency through PA’ hot and cool seasons.

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.
• 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.
• Ensure all penetrations between conditioned and unconditioned areas—like attics, basements, and crawl spaces—are tightly sealed.
• Local permitting offices often offer official compliance checklists — review the Philadelphia sample here for reference.
• Local Energy Audits uses professional-grade thermal imaging, caulk, and spray foam to locate and close leaks during the visit./li>
• In most situations—over 90% of the time—we get a passing score within two hours and finalize all required paperwork.