Blower Door Test in Morrisville, PA

Confirm your home’s energy performance and identify leaks through accurate blower door test in Morrisville, PA. Our trained team assists homeowners, builders, and contractors by detecting hidden air leaks, boosting comfort, and meeting PA energy regulations.

What Is A Blower Door Test?

A blower door test quantifies how often indoor air is renewed through air changes per hour, helping maintain optimal ventilation. If air changes happen too often, it forces your system to reheat or recool the air repeatedly, wasting energy and lowering performance. Excessive air circulation may cause drafts, discomfort from leaks, and indoor problems like condensation, mold, and moisture damage. A blower door test in Morrisville, PA assists in finding and sealing air leaks early to improve home comfort, energy efficiency, and overall durability.

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How Is A Blower Door Test Conducted?

For blower door test in Morrisville, PA, all outside doors and windows are closed properly, and inside doors are kept open to balance air pressure throughout the space. A central door to the outside is selected, and an adjustable aluminum frame with a fabric cover is installed there. Technicians use a calibrated fan mounted on the frame to bring the home’s interior to 50 Pascals, approximating a 20 mph wind on the walls.

As air is drawn out by the fan, it causes outdoor air to infiltrate through existing leaks and gaps in the structure. Using a nanometer, we accurately compare the pressure difference between the fan output and the home’s interior. The test results are converted into air changes per hour (ACH), which determines the airtightness and performance level of the home in PA weather.

What Is A Passing Blower Door Test Score?

In Morrisville, PA, energy efficiency standards for homes are based on the 2015 International Energy Conservation Code (IECC) or more recent updates approved by the jurisdiction. In most regions, homes must achieve 3 air changes per hour or less on a blower door test to meet energy efficiency standards. Achieving this standard in your blower door test in Morrisville, PA lowers utility bills and guarantees adherence to local code requirements.

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. We often collaborate with home builders, contractors, and homeowners who require blower door test in Morrisville, PA to meet energy efficiency standards and close permits. If ducts or HVAC units are located outside the thermal envelope, a duct leakage test may also be mandated. Learn more about energy code compliance.

A blower door test in Morrisville, PA helps homeowners discover inefficiencies. Depressurizing the home makes leaks more noticeable and highlights where energy can be conserved. 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.
Select a proper air barrier such as Tyvek or Zip Sheathing and ensure every seam is thoroughly taped for airtight sealing.
Ensure the insulation used meets the proper R-value and is well fitted throughout the structure’s 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 the transitions between conditioned and unconditioned zones, particularly around basements, attics, and crawl spaces.
Building departments typically release step-by-step compliance lists — download the Philadelphia sample here as an example.
Local Energy Audits uses thermal imaging tools, caulk, and spray foam to detect and seal leaks directly on-site./li>
In the majority of cases—over 90%—we reach a passing score within two hours and provide all closing documentation.

Preparing for a Blower Door Test in Morrisville, PA

For blower door test in Morrisville, PA, preparation includes turning off all heating and air conditioning units, plus bathroom and kitchen exhaust fans. Next, we do a complete walkthrough to ensure all exterior doors and windows are sealed — including those opening to garages, unfinished basements, or areas beyond the thermal envelope. After ensuring the home is fully sealed, we mount the blower door fan and frame on a central exterior door and depressurize the interior to 50 Pascals for accurate testing. Once the home is under depressurization, exterior air infiltrates faster through cracks, helping pinpoint leaks. 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 sealing the leaks, we can immediately run another test to verify that the desired blower door score meets the local efficiency standards for homes in Morrisville, PA.

Blower Door Test for Contractors in Morrisville, PA

When contractors schedule blower door test in Morrisville, PA, professionally insulated homes often only need minor adjustments that can be handled during the test. By using materials such as chalk and spray foam, our team can fix small air leaks immediately on-site. In over 90% of cases, we reach a passing blower door test score in less than two hours and hand over the documents needed to close the building permit right away.

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Schedule Your blower door test in Morrisville, PA

Experience prompt, professional, and certified blower door test in Morrisville, PA from our knowledgeable team. Whether you’re enhancing comfort at home or wrapping up a construction project, we perform every test with accuracy and full compliance with energy codes.

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