Blower Door Test in North Wales, PA

How Is A Blower Door Test Conducted?

Before blower door test in North Wales, PA, every exterior door and window is closed securely, while interior doors stay open to let air move evenly around the home. Technicians install a fabric panel and adjustable aluminum frame into one central exterior door opening. A calibrated fan is installed onto the frame, creating a pressure difference of 50 Pascals, comparable to a continuous 20 mph wind blowing on the home.

As the fan removes air from inside, exterior air flows in through leaks and gaps in the building envelope. A precise nanometer instrument allows us to compare the pressure generated by the fan to that within the house. These values are expressed as air changes per hour (ACH), a key measure of the home’s airtightness and its energy performance under PA conditions.

What Is A Passing Blower Door Test Score?

Construction in North Wales, 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. When your blower door test in North Wales, PAmeets this requirement, you benefit from reduced energy bills and code compliance.

Why Do I Need A Blower Door Test?

PA and local city codes follow the IECC (International Energy Conservation Code), which mandates blower door tests on residential buildings after construction or renovation. Our team regularly helps home builders, contractors, and homeowners seeking blower door test in North Wales, PA to satisfy energy code standards and close final inspections. 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.

With blower door test in North Wales, PA, homeowners can detect where energy is being wasted. As the fan depressurizes the house, leaks are revealed, highlighting areas for sealing and savings. blower door test in North Wales, PA provides homeowners with clear insights into energy loss. When the fan creates pressure differences, leaks are exposed, allowing for easy detection and repair. In only a few hours, a blower door test can deliver a long-lasting impact on energy efficiency, comfort, and indoor performance throughout PA’ changing seasons.

How To Pass A Blower Door Test:

• Anticipate potential air leaks before testing begins.
• Select a proper air barrier such as Tyvek or Zip Sheathing and ensure every seam is thoroughly taped for airtight sealing.
• 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.
• Seal off any access points or gaps between conditioned and unconditioned spaces like attics, crawl spaces, and basements.
• Local code departments usually provide a checklist to assist with compliance — see the Philadelphia example here.
• Local Energy Audits is equipped with thermal imaging tools, caulk, and spray foam to find and seal air leaks immediately on-site./li>
• Over 90% of the time, we complete testing with a passing score in two hours or less and handle all permit paperwork on-site.