Blower Door Test in Lansdale, PA

Verify your home’s airtightness and meet energy-efficiency standards with a professional blower door test in Lansdale, PA. Our certified specialists support homeowners, builders, and contractors by locating hidden air leaks, improving efficiency, and achieving PA energy code compliance.

What Is A Blower Door Test?

A blower door test measures the building’s air changes per hour, helping ensure indoor air is consistently refreshed. Excess air exchange can harm efficiency because each replacement of indoor air requires extra energy to heat or cool it again. Excessive air changes often cause drafts, discomfort, and humidity-related issues such as condensation and mold growth inside the home. A blower door test in Lansdale, PA identifies potential air leakage problems early so homeowners and builders can improve comfort, energy performance, and home durability.

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How Is A Blower Door Test Conducted?

To carry out blower door test in Lansdale, PA, exterior doors and windows are fully closed, and interior doors are left open for even air distribution in the home. A central exterior door is picked, where the technician fits an adjustable aluminum frame and fabric panel for airtight testing. 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 air is drawn out by the fan, outdoor air seeps in through unsealed joints and hidden cracks. A precise tool called a nanometer is used to compare the pressure generated by the fan with that inside the home. These figures are calculated into air changes per hour (ACH), reflecting how well the home prevents air loss and maintains efficiency in PA conditions.

What Is A Passing Blower Door Test Score?

Homes built in Lansdale, PA are expected to comply with the 2015 International Energy Conservation Code (IECC) or any newer local versions in effect. For most regions, achieving 3 air changes per hour or less on a blower door test ensures that the home is properly energy efficient. Passing this requirement during a blower door test in Lansdale, PA keeps your home efficient and aligned with local building code standards.

Why Do I Need A Blower Door Test?

The State of PA and its local governments follow the IECC standards, which require blower door test on newly built or remodeled residential dwellings. Our company assists home builders, contractors, and homeowners who rely on blower door test in Lansdale, PA to fulfill energy code compliance and finalize construction permits. A duct leakage test may also be performed when ductwork or HVAC equipment extends beyond the thermal envelope. Learn more about energy code compliance.

Performing blower door test in Lansdale, PA allows homeowners to identify and fix leaks. The test makes air infiltration visible, uncovering opportunities to reduce energy loss. It only takes a few hours to perform a blower door test, but the long-lasting impact on comfort and efficiency is felt through PA’ hot summers and cool winters.

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 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.
Close gaps and penetrations between conditioned zones and unconditioned sections like attics, basements, and crawl spaces.
Local construction departments often include compliance guides — you can download the Philadelphia checklist here.
Local Energy Audits arrives fully equipped with thermal imaging, caulk, and spray foam to detect and seal leaks in one visit./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.

Preparing for a Blower Door Test in Lansdale, PA

To ensure accuracy during blower door test in Lansdale, PA, we begin by switching off the HVAC system and all exhaust fans in the home. Next, our team walks through the home to verify that every exterior door and window is sealed shut — including access points to unfinished basements, garages, or areas beyond the thermal envelope. After sealing the home, the blower door fan is installed in a central exterior doorway and used to lower pressure to 50 Pascals to measure airflow and leakage effectively. After depressurization, air from outside rushes in through cracks and gaps, making leak detection much easier. By using a thermal imager, we can spot temperature variations in walls, ceilings, and other surfaces that indicate leaks into unconditioned areas. Our technicians arrive with chalk, spray foam, and weatherstripping materials, ready to work with homeowners or contractors to fix visible air leakage problems right away. After completing sealing improvements, we retest immediately to ensure the desired blower door score is met and the home complies with efficiency standards in Lansdale, PA.

Blower Door Test for Contractors in Lansdale, PA

For contractors overseeing blower door test in Lansdale, PA, most properly insulated homes can manage small on-site repairs during testing. By applying materials such as chalk and spray foam, small leaks or gaps are often sealed on the spot. In over 90% of cases, we manage to secure a passing blower door test score within just two hours and immediately provide all necessary paperwork to close out the permit process.

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Schedule Your blower door test in Lansdale, PA

Get reliable, timely, and certified blower door test in Lansdale, PA from our trained and experienced specialists. Whether you’re a homeowner focused on efficiency or a contractor working to close a permit, we ensure each test is conducted with precision and meets all energy code standards.

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