Blower Door Test in Langhorne, PA

How Is A Blower Door Test Conducted?

To conduct blower door test in Langhorne, PA, exterior doors and windows are closed properly, while interior doors remain open to help maintain even air movement. One main exterior door is identified, and an adjustable aluminum frame with a fabric panel is securely attached. 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 extracts air, exterior air begins entering the house through any unsealed spaces or cracks. A sensitive device called a nanometer measures how the fan’s pressure relates to the home’s internal air pressure. These readings produce the air changes per hour (ACH) value, indicating both the home’s airtightness and efficiency within the PA climate.

What Is A Passing Blower Door Test Score?

Homes in Langhorne, PA are typically required to follow the 2015 International Energy Conservation Code (IECC) or the most recent version adopted locally. In most regions, homes must achieve 3 air changes per hour or less on a blower door test to meet energy efficiency standards. Meeting this benchmark in your blower door test in Langhorne, PA reduces ongoing energy costs while ensuring local regulatory compliance.

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 team regularly helps home builders, contractors, and homeowners seeking blower door test in Langhorne, PA to satisfy energy code standards and close final inspections. A duct leakage test might be necessary if your home’s HVAC units or ducts are located outside its thermal envelope. Learn more about energy code compliance.

By performing blower door test in Langhorne, PA, homeowners can identify where conditioned air escapes. Depressurization makes leaks visible, uncovering ways to enhance comfort and efficiency. Taking only a few hours, a blower door test creates a long-lasting impact by improving comfort, performance, and efficiency in PAhomes.

How To Pass A Blower Door Test:

• Anticipate potential air leaks before testing begins.
• Install an effective air barrier, for example Tyvek or Zip Sheathing, and make certain all seams are sealed with durable tape.
• Ensure insulation with the specified R-value is properly installed and fitted throughout 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.
• Seal every transition point between conditioned and unconditioned environments, including attics, crawl spaces, and basements.
• Local building authorities commonly offer checklists to verify code compliance — review the Philadelphia example here.
• Local Energy Audits arrives fully equipped with thermal imaging, caulk, and spray foam to detect and seal leaks in one visit./li>
• Typically, over 90% of the time we record a passing score in two hours and handle all permit-related documentation.