Blower Door Test in Bryn Mawr, PA

Enhance comfort and confirm compliance with detailed blower door test in Bryn Mawr, PA. Our certified technicians provide homeowners, builders, and contractors with expert air leak detection, better comfort, and complete PA energy code compliance.

What Is A Blower Door Test?

A blower door test evaluates air changes per hour, showing how often indoor air is replaced by fresh outdoor air — a process essential for healthy living spaces. Too many air changes can negatively impact efficiency, as every replacement of indoor air demands additional heating or cooling energy. Too much air movement from leaks can cause uncomfortable drafts, moisture accumulation, and mold or condensation issues indoors. A blower door test in Bryn Mawr, PA locates leaks and inefficiencies quickly, allowing homeowners to enhance energy performance and create a cozier living space.

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How Is A Blower Door Test Conducted?

To carry out blower door test in Bryn Mawr, PA, exterior doors and windows are fully closed, and interior doors are left open for even air distribution in the home. A single main exterior door is fitted with an adjustable aluminum frame and attached fabric panel to begin the setup. 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 expels air, the resulting pressure draws outdoor air in through hidden leaks and unsealed joints. Using a highly accurate nanometer, we compare the fan-induced pressure to the natural air pressure 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?

In Bryn Mawr, PA, residential buildings must meet the benchmarks set by the 2015 International Energy Conservation Code (IECC) or any newer codes adopted locally. In many locations, a result of 3 air changes per hour or less is required to verify the home’s energy efficiency level. Passing this threshold during your blower door test in Bryn Mawr, PA ensures both energy savings and full compliance with local regulations.

Why Do I Need A Blower Door Test?

The State of PA, together with many cities and counties, enforces the IECC (International Energy Conservation Code), which calls for blower door test on new or renovated residential properties. Our professionals frequently support home builders, contractors, and homeowners who need blower door test in Bryn Mawr, PA to comply with energy codes and finalize projects. A duct leakage test may also be performed when ductwork or HVAC equipment extends beyond the thermal envelope. Learn more about energy code compliance.

Homeowners who choose blower door test in Bryn Mawr, PA can easily locate leaks. As the fan depressurizes the home, airflow through gaps becomes apparent, exposing areas needing improvement. Although it’s a short process, a blower door test produces a long-lasting impact by improving comfort and lowering energy costs throughout PA’ climate extremes.

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 properly rated insulation with the right R-value and ensure consistent coverage throughout 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 and seal every opening between heated or cooled spaces and unconditioned areas such as basements, attics, and crawl spaces.
Most building departments provide detailed compliance resources — view the Philadelphia checklist 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>
We achieve a passing score within two hours in more than 90% of tests and issue the documents to close the building permit.

Preparing for a Blower Door Test in Bryn Mawr, PA

To get ready for blower door test in Bryn Mawr, PA, our team turns off the HVAC system and shuts down kitchen and bathroom fans. We proceed with a quick home walkthrough, checking that every exterior door and window is tightly shut — including ones that lead to unfinished or unconditioned spaces outside the thermal envelope. Once preparation is complete, the blower door fan and frame are installed in a centrally located exterior door. The fan then reduces pressure to 50 Pascals, allowing accurate leakage assessment. Once pressure is lowered, outdoor air moves in with greater force, highlighting problem areas and leaks. A thermal imager helps us visualize temperature differences in walls, ceilings, and surfaces that separate conditioned and unconditioned spaces. We carry all necessary materials, including chalk, spray foam, and weatherstripping, to collaborate with homeowners or contractors on visible air leakage repairs during testing. After completing the sealing process, we can retest right away to check if the desired blower door score has been obtained, confirming compliance with Bryn Mawr, PA efficiency standards.

Blower Door Test for Contractors in Bryn Mawr, PA

Contractors arranging blower door test in Bryn Mawr, PA will find that homes with professional insulation can typically resolve small issues right on-site during testing. Using quick-application materials like chalk and spray foam, small leaks or openings are sealed right during testing. In more than 90% of cases, we achieve a passing blower door test score within two hours and deliver all documents needed to finalize the permit without any delay.

888 213-3975

Schedule Your blower door test in Bryn Mawr, PA

Experience prompt, professional, and certified blower door test in Bryn Mawr, PA from our knowledgeable team. Whether you’re improving a home’s efficiency or ensuring code compliance for a project, we perform every test with professionalism and attention to detail.

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