Blower Door Test in Royersford, PA

How Is A Blower Door Test Conducted?

To execute blower door test in Royersford, PA, exterior windows and doors are secured shut, while interior doors are left open to distribute air evenly. A single central exterior door is designated, where the blower door’s aluminum frame and fabric panel are set up. 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.

As the fan creates negative pressure, outside air infiltrates the home through gaps and small openings. With the help of a nanometer, we determine the pressure difference between the fan’s airflow and the home’s internal conditions. These readings are then converted into the total number of air changes per hour (ACH), revealing how airtight the home is and how well it performs in the PA climate.

What Is A Passing Blower Door Test Score?

In Royersford, PA, 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. Meeting this requirement during your blower door test in Royersford, PA helps reduce energy costs while keeping your home compliant with local building codes.

Why Do I Need A Blower Door Test?

Following the IECC guidelines, PA 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 Royersford, PA to pass inspections and fulfill energy code obligations. 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.

With blower door test in Royersford, PA, homeowners can pinpoint hidden air leaks. The depressurization process makes them obvious, enabling better sealing and lower energy costs. A blower door test requires minimal time but makes a long-lasting impact on home comfort and energy performance during PA’ extreme temperatures.

How To Pass A Blower Door Test:

• Anticipate potential air leaks before testing begins.
• Use materials like Tyvek or Zip Sheathing as your air barrier and ensure every seam is well taped for best results.
• Use insulation of the correct R-value and confirm that it’s tightly installed throughout every section of 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 gaps and openings separating conditioned spaces from unconditioned areas, including crawl spaces, basements, and attics.
• Many building departments provide step-by-step compliance guides — you can find the Philadelphia example here.
• Local Energy Audits uses thermal imaging tools, caulk, and spray foam to detect and seal leaks directly on-site./li>
• In more than 90% of cases, we secure a passing score within two hours and deliver the paperwork needed to close the permit.