Blower Door Testing Winchester
Blower Door Testing
Blower door testing measures how much air is leaking from a building through unsealed gaps, cracks, and penetrations in the envelope. It’s a key requirement for verifying compliance with energy codes that promote tighter, more efficient, and better-controlled buildings.
The test works by pressurizing or depressurizing the structure to quantify total air leakage. This data determines whether the building meets the required leakage threshold for code compliance and offers valuable insight into the home’s overall energy performance.
Beyond code compliance for new construction, blower door testing is also required—or strongly recommended—for high-performance building certifications such as LEED, Passive House, ENERGY STAR for Buildings, Zero Energy Ready Home, NGBS, and Green Star, among others. It’s also a critical component of accurate HVAC load calculations and is widely used during comprehensive energy audits.
We are certified through the Building Performance Institute (IDL, BA-T, BA-P) and are a licensed Residential Building Energy Auditing Firm in Virginia. Whether you’re a builder needing subdivision-wide testing, a commercial project team aiming for certification, or a homeowner curious about your home’s envelope performance–we’re ready to deliver professional-grade testing to meet your exact needs. Servicing Winchester, Gordonsville, Crozet, Earlysville, Ruckersville, Stanardsville, Palmyra, Bumpass, Louisa, Mineral, Madison, Orange and surrounding communities.
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Service Area
- Leesburg
- Winchester
- Ashburn
- Brambleton
- Hamilton
- Kernstown
- Stephenson
- Aldie
- Broadlands
- Berryville
- Purcellville
- Lovettsville
- Delaplane