Blower Door Test in Dresher, PA

Find and fix air leaks while improving performance through reliable blower door test in Dresher, 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 is performed to record air changes per hour in buildings, confirming that fresh air regularly replaces stale indoor air. Too many air exchanges make heating and cooling systems work harder, increasing energy consumption and lowering efficiency. Too much air movement from leaks can cause uncomfortable drafts, moisture accumulation, and mold or condensation issues indoors. A blower door test in Dresher, 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?

For blower door test in Dresher, 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. A calibrated fan is then attached to the frame and used to depressurize the home to 50 Pascals, which is about the same as a steady 20 mph wind pushing against the structure.

When the fan pulls indoor air outward, fresh air from outside rushes in through leaks and weak spots. A precise nanometer instrument allows us to compare the pressure generated by the fan to that within the house. 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 Dresher, PA, residential properties must meet the energy efficiency criteria outlined in the 2015 International Energy Conservation Code (IECC) or updated local versions. For most regions, achieving 3 air changes per hour or less on a blower door test ensures that the home is properly energy efficient. By meeting this standard in your blower door test in Dresher, PA, you can enjoy lower utility bills and peace of mind with code compliance.

Why Do I Need A Blower Door Test?

In PA, both state and local jurisdictions follow the IECC (International Energy Conservation Code), requiring blower door test for new and remodeled homes. Our company assists home builders, contractors, and homeowners who rely on blower door test in Dresher, PA to fulfill energy code compliance and finalize construction permits. You may also need a duct leakage test if your ductwork or HVAC equipment lies outside the home’s thermal envelope. Learn more about energy code compliance.

By performing blower door test in Dresher, PA, homeowners can identify where conditioned air escapes. Depressurization makes leaks visible, uncovering ways to enhance comfort and efficiency. This simple test, completed in a few hours, creates a long-lasting impact on your home’s efficiency and comfort during PA’ hot and cold months.

How To Pass A Blower Door Test:

Anticipate potential air leaks before testing begins.
Install a quality air barrier like Tyvek or Zip Sheathing and confirm that all joints and seams are completely taped.
Use insulation that has the designated R-value and confirm it’s properly applied throughout the building envelope for maximum efficiency.
Seal all penetrations in exterior walls using caulk or spray foam.
Ensure doors and windows are properly installed, caulked, and weather-sealed.
Properly seal all connections between conditioned and unconditioned zones, including basements, crawl spaces, and attics.
Local jurisdictions frequently publish compliance checklists — the Philadelphia version can be downloaded here.
Local Energy Audits arrives fully equipped with thermal imaging, caulk, and spray foam to detect and seal leaks in one visit./li>
More than 90% of the time, our team delivers a passing score in less than two hours and completes the necessary permit paperwork.

Preparing for a Blower Door Test in Dresher, PA

To prepare a home for blower door test in Dresher, PA, we shut off the HVAC system and disable all exhaust fans. Next, a brief home walkthrough ensures every exterior door and window is closed — even those opening to unconditioned areas like garages or basements outside the thermal envelope. After sealing everything, we install the blower door frame and fan in a central exterior door and use it to depressurize the home to 50 Pascals for accurate airflow data. When the home reaches depressurization, outside air seeps in rapidly, helping identify leaks with greater accuracy. A thermal imager helps us visualize temperature differences in walls, ceilings, and surfaces that separate conditioned and unconditioned spaces. Equipped with chalk, spray foam, and weatherstripping, we can directly assist homeowners or contractors in resolving visible air leakage problems on-site. After the sealing process, we can promptly retest to confirm if the desired blower door score has been reached, meeting Dresher, PA energy code requirements.

Blower Door Test for Contractors in Dresher, PA

When contractors schedule blower door test in Dresher, PA, professionally insulated homes often only need minor adjustments that can be handled during the test. With chalk and spray foam on hand, our crew can seal small leaks or gaps almost instantly. In over 90% of cases, we reach a passing blower door test score in two hours and issue the required documentation for quick permit closure.

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Schedule Your blower door test in Dresher, PA

Count on our skilled technicians for fast, precise, and certified blower door test in Dresher, PA. Whether you’re focused on comfort improvements or completing compliance checks, we ensure every test meets energy codes with precision and care.

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