Blower Door Test in Souderton, PA

How Is A Blower Door Test Conducted?

When blower door test in Souderton, PA is conducted, every exterior door and window is closed, and interior doors are left open to achieve uniform air movement inside. One central exterior door is chosen, where an adjustable aluminum frame and durable fabric panel are securely installed. A calibrated fan is used to depressurize the home through the frame to 50 Pascals, representing the same pressure as a 20 mph wind.

As the fan extracts air, exterior air begins entering the house through any unsealed spaces or cracks. 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 PA.

What Is A Passing Blower Door Test Score?

Homes in Souderton, PA are typically required to follow the 2015 International Energy Conservation Code (IECC) or the most recent version adopted locally. In many locations, a result of 3 air changes per hour or less is required to verify the home’s energy efficiency level. Achieving this standard in your blower door test in Souderton, PA lowers utility bills and guarantees adherence to local code requirements.

Why Do I Need A Blower Door Test?

The State of PA 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. Our certified technicians assist home builders, contractors, and homeowners with blower door test in Souderton, PA to meet energy requirements and wrap up permit approvals. 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 Souderton, PA. As the fan depressurizes the home, incoming air through leaks becomes easier to detect, revealing problem spots and potential energy-saving improvements. A blower door test is quick to perform but offers a long-lasting impact on comfort, energy savings, and home efficiency across all PAclimates.

How To Pass A Blower Door Test:

• Anticipate potential air leaks before testing begins.
• Apply an effective air barrier such as Tyvek or Zip Sheathing, ensuring every seam is tightly sealed with proper 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.
• Seal all joints and gaps that connect conditioned and unconditioned areas such as basements, attics, and crawl spaces.
• Local jurisdictions frequently publish compliance checklists — the Philadelphia version can be downloaded here.
• Local Energy Audits identifies and repairs leaks on-site using thermal imaging tools, caulk, and high-quality spray foam./li>
• Typically, over 90% of the time we record a passing score in two hours and handle all permit-related documentation.