Blower Door Test in Saint Georges, DE

Make sure your home meets airtightness and efficiency goals with certified blower door test in Saint Georges, DE. Our certified team helps homeowners, builders, and contractors locate air leaks, enhance indoor comfort, and meet all DE energy efficiency requirements.

What Is A Blower Door Test?

A blower door test helps determine the air changes per hour to confirm that your home has sufficient fresh air replacement. An excessive rate of air changes can be inefficient because each time the air is replaced, it must be reheated or recooled, raising energy costs. Excessive air changes can bring drafts and air leakage discomfort while promoting moisture buildup, mold, and condensation. A blower door test in Saint Georges, DE 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?

In preparation for blower door test in Saint Georges, DE, all exterior entry points are sealed, and interior doors are left open to allow consistent air circulation. A main exterior door is selected for setup, with an adjustable aluminum frame and fitted fabric panel placed in position. A calibrated fan is used to depressurize the home through the frame to 50 Pascals, representing the same pressure as a 20 mph wind.

As air is drawn out by the fan, it causes outdoor air to infiltrate through existing leaks and gaps in the structure. With the help of a nanometer, we determine the pressure difference between the fan’s airflow and the home’s internal conditions. The collected data converts to air changes per hour (ACH), demonstrating how tightly sealed and efficient the home remains in DE climates.

What Is A Passing Blower Door Test Score?

Homes in Saint Georges, DE are typically required to follow the 2015 International Energy Conservation Code (IECC) or the most recent version adopted locally. In most regions, homes must achieve 3 air changes per hour or less on a blower door test to meet energy efficiency standards. Complying with this benchmark during a blower door test in Saint Georges, DE helps cut energy expenses and meet local building regulations.

Why Do I Need A Blower Door Test?

Both DE and local jurisdictions adopt the IECC energy code, making blower door test mandatory for new and renovated residential structures. We routinely help home builders, contractors, and homeowners requiring blower door test in Saint Georges, DE for energy code compliance and permit closure. If any part of the HVAC system or ductwork sits beyond the building’s thermal envelope, a duct leakage test may be required. Learn more about energy code compliance.

Homeowners benefit from blower door test in Saint Georges, DE because depressurization exposes airflow through cracks, helping identify leaks and boost efficiency. 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 DE’ hot summers and cool winters.

How To Pass A Blower Door Test:

Anticipate potential air leaks before testing begins.
Choose an appropriate air barrier, like Tyvek or Zip Sheathing, and ensure all seams are accurately and securely taped.
Place insulation with the accurate R-value and check for proper installation and full coverage in 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.
Seal all openings between conditioned and unconditioned areas, including basements, attics, and crawl spaces.
Most building departments provide detailed compliance resources — view the Philadelphia checklist example here.
Local Energy Audits arrives fully equipped with thermal imaging, caulk, and spray foam to detect and seal leaks in one visit./li>
In most situations—over 90% of the time—we get a passing score within two hours and finalize all required paperwork.

Preparing for a Blower Door Test in Saint Georges, DE

To properly prepare for blower door test in Saint Georges, DE, the HVAC system and all bathroom and kitchen fans are turned off. A brief walkthrough follows, during which we verify all exterior windows and doors — even those leading to unconditioned spaces — are closed tight to preserve the thermal envelope. Once all doors and windows are sealed, we set up the blower door system in a centrally located exterior door and reduce air pressure to 50 Pascals to evaluate leakage. Once the home is under depressurization, exterior air infiltrates faster through cracks, helping pinpoint leaks. A thermal imager helps highlight problem zones by detecting temperature variations in walls, ceilings, and areas connected to unconditioned spaces. We come prepared with chalk, spray foam, and weatherstripping, allowing us to assist homeowners or contractors in sealing visible air leakage points on the spot. 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 Saint Georges, DE.

Blower Door Test for Contractors in Saint Georges, DE

Contractors arranging blower door test in Saint Georges, DE will find that homes with professional insulation can typically resolve small issues right on-site during testing. With readily available sealing materials like chalk and spray foam, we can repair minor leaks or gaps on the spot. In more than 90% of cases, our team secures a passing blower door test score within two hours and provides full documentation to complete the permit without any delay.

888 213-3975

Schedule Your blower door test in Saint Georges, DE

Get fast, reliable, and certified blower door test in Saint Georges, DE from our experienced and trusted team. Whether you’re a homeowner seeking greater comfort or a contractor finalizing a permit, we ensure every test meets energy code requirements with precision and professionalism.

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