Blower Door Test in Collegeville, PA

How Is A Blower Door Test Conducted?

While performing blower door test in Collegeville, PA, technicians make sure exterior doors and windows are shut tight and interior doors are open for uniform pressure. A single central exterior door is designated, where the blower door’s aluminum frame and fabric panel are set up. Technicians mount a calibrated fan onto the frame to achieve 50 Pascals of depressurization — similar to a constant 20 mph wind acting on the home.

When the fan pulls indoor air outward, fresh air from outside rushes in through leaks and weak spots. A nanometer precisely gauges the pressure applied by the fan in relation to the home’s internal air pressure. These measurements are used to calculate air changes per hour (ACH), which reflects the home’s airtightness and performance under PA weather.

What Is A Passing Blower Door Test Score?

In Collegeville, PA, compliance with the 2015 International Energy Conservation Code (IECC) or subsequent locally adopted versions is typically mandatory for residential properties. An acceptable blower door test result in most areas is 3 air changes per hour or less, demonstrating solid energy performance. When your blower door test in Collegeville, PA meets this requirement, you ensure energy efficiency and maintain compliance with building codes.

Why Do I Need A Blower Door Test?

Across PA, the IECC (International Energy Conservation Code) is adopted by the state and local jurisdictions, requiring blower door test on residential constructions and renovations. Our experts assist home builders, contractors, and homeowners needing blower door test in Collegeville, PA to ensure compliance with energy codes and complete final permits. If any part of the HVAC system or ductwork sits beyond the building’s thermal envelope, a duct leakage test may be required. Learn more about energy code compliance.

Homeowners experience real energy benefits from blower door test in Collegeville, PA. The fan’s depressurization highlights air leaks, helping identify inefficiencies that can be sealed for savings. A short blower door test can result in a long-lasting impact on your home’s energy efficiency, comfort, and year-round performance in PA.

How To Pass A Blower Door Test:

• Anticipate potential air leaks before testing begins.
• Use an air barrier system such as Tyvek or Zip Sheathing and verify that each seam is properly sealed with tape.
• Fit insulation with the correct R-value and make sure it’s installed without voids across the entire building envelope.
• 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.
• Many local municipalities issue code compliance checklists — the Philadelphia example is available here.
• Our professionals at Local Energy Audits use caulk, spray foam, and thermal imaging to detect and seal leaks on-site for better efficiency./li>
• More than 90% of the time, our team delivers a passing score in less than two hours and completes the necessary permit paperwork.