Blower Door Test in North Wales, PA

Confirm your home’s energy performance and identify leaks through accurate blower door test in North Wales, 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 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. When too much air is exchanged, it can cause drafts, reduce comfort, and create conditions for moisture buildup and mold. A blower door test in North Wales, PA helps spot air leaks before they worsen, improving efficiency, comfort, and long-term structural quality.

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How Is A Blower Door Test Conducted?

For blower door test in North Wales, PA, all outside doors and windows are closed properly, and inside doors are kept open to balance air pressure throughout the space. A single central exterior door is designated, where the blower door’s aluminum frame and fabric panel are set up. A calibrated fan is fitted into the frame and depressurizes the home to 50 Pascals, mimicking the pressure caused by a 20 mph wind.

When indoor air is extracted, outdoor air pushes in through every leak and small gap in the building. A precise tool called a nanometer is used to compare the pressure generated by the fan with that inside the home. 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?

Residential buildings in North Wales, PA must adhere to the 2015 International Energy Conservation Code (IECC) or newer versions adopted by city or county regulations. Most areas recognize 3 air changes per hour or less as the target blower door test value to ensure energy efficiency. When your blower door test in North Wales, PA meets this requirement, you ensure energy efficiency and maintain compliance with building codes.

Why Do I Need A Blower Door Test?

In accordance with the IECC, the State of PA and various local authorities require blower door test for new or remodeled residential properties. We work closely with home builders, contractors, and homeowners who need blower door test in North Wales, PA to ensure compliance and successful project completion. 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.

Homeowners experience real energy benefits from blower door test in North Wales, PA. The fan’s depressurization highlights air leaks, helping identify inefficiencies that can be sealed for savings. A blower door test usually takes just a few hours but delivers a long-lasting impact on your home’s comfort, performance, and efficiency—particularly during PA’ hot summers and cool winters.

How To Pass A Blower Door Test:

Anticipate potential air leaks before testing begins.
Apply an air barrier like Tyvek or Zip Sheathing, making sure all connecting seams are properly taped and sealed.
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.
Close and seal every opening between heated or cooled spaces and unconditioned areas such as 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 arrives fully equipped with thermal imaging, caulk, and spray foam to detect and seal leaks in one visit./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 North Wales, PA

Before conducting blower door test in North Wales, PA, we make sure all heating, cooling, and ventilation fans are switched off. Next, we carefully walk through the property to make sure all exterior openings — including those to basements, garages, or areas outside the thermal envelope — are closed properly. 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 pressure is lowered, outdoor air moves in with greater force, highlighting problem areas and leaks. Using a thermal imager, we detect problem areas by observing temperature variations in walls, ceilings, and other surfaces that connect to unconditioned spaces. Using chalk, spray foam, and weatherstripping, we assist homeowners and contractors in addressing visible air leakage areas on-site. After all leaks are sealed, we retest immediately to confirm the desired blower door score has been met and that your home satisfies efficiency requirements in North Wales, PA.

Blower Door Test for Contractors in North Wales, PA

For contractors conducting blower door test in North Wales, PA, well-insulated homes generally require only minimal on-site corrections during the test. Using professional-grade materials like chalk and spray foam, we seal small leaks or gaps as soon as they’re detected. In over 90% of cases, our technicians achieve a passing blower door test score within just two hours and supply all necessary documentation to finalize the building permit efficiently.

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Schedule Your blower door test in North Wales, PA

Get trusted, professional, and certified blower door test in North Wales, PA from our experienced technicians. Whether you’re a homeowner improving energy performance or a contractor completing certification, we make sure each test fulfills all energy code requirements.

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