If you have any questions about the blower door test please do not hesitate to contact us!


We can explain to you the procedure and what you need to do to be prepared for the test.


Testing is best performed when the house is considered "move-in" ready.


We look forward to working with you!

proudly serving all of upstate south carolina

Quick and easy energy code compliance

402.4.2.1 Testing Option

Building envelope tightness and insulation installation shall be considered acceptable when tested air leakage is less than seven air changes per hour (ACH) when tested with a blower door at a pressure of 33.5 psf (50 Pa). Testing shall occur after rough in and after installation of penetrations of the building envelope, including penetrations for utilities, plumbing, electrical, ventilation and combustion appliances.

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During testing:

  1. Exterior windows and doors, fireplace and stove doors shall be close, but not sealed;
  2. Dampers shall be closed, but not sealed, including exhaust, intake, makeup air, backdraft and flue dampers;
  3. Interior doors shall be open;
  4. Exterior openings for continuous ventilation systems and heat recovery ventilators shall be closed and sealed;
  5. Heating and cooling system(s) shall be turned off;
  6. HVAC ducts shall not be sealed; and
  7. Supply and return registers shall not be sealed.

All information on this page is taken directly from the U.S. Department of Energy.

Click here to see the information on their website.

SOUTH CAROLINA:

Current Code: 2009 IECC

Effective Date: 01/01/2013

Adoption Date: 04/02/2012

Code Enforcement: Mandatory