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  • Residential Energy Testing

    See the Benefits for Air Sealing  for additional information

    Air Leakage and Duct Tightness Testing

    General Requirements

    • Air leakage testing per R402.4.1.2 (blower door) and duct tightness testing per R403.2.2 (duct blaster or pressure pan) shall be performed by either a BPI certified building analyst, or a RESNET certified HERS Rater.
    •  The person performing the test shall not be an employee of the builder of the home nor of any of the subcontractors involved in the installation of the tested system.

    Tips for Air Sealing

    The following shall be provided prior to final inspection:

    • Air leakage testing per R402.4.1.2 (blower door) indicating compliance.
    • Duct tightness testing per R403.2.2 (duct blaster or pressure pan) indicating compliance.
    • A copy of the BPI or HERS certification of the individual performing the test.
    • Tests performed under this section are subject to random audit re-test. BPI analysts and HERS raters are subject to disciplinary action

    How to Submit

    • The above noted reports and certificate may be emailed  to building.safety@pima.gov.  Circle or cloud the passing number for easy reference.

    Air leakage and duct testing requirements from the 2012 International Residential Code (IRC)

    R402.4.1.2 [Air Leakage] Testing.

    The building or dwelling unit shall be tested and verified as having an air leakage rate of not exceeding 5 air changes per hour in Climate Zones 1 and 2, and 3 air changes per hour in Climate Zones 3 through 8. Testing shall be conducted with a blower door at a pressure of 0.2 inches w.g. (50 Pascals).. Testing shall be conducted by individuals holding current certification for such testing from Residential Energy Services Network (RESNET), Building Performance Institute (BPI) or other approved agencies. A written report of the results of the test shall be signed by the party conducting the test and provided to the code official. Testing shall be performed at any time after creation of all penetrations of the building thermal envelope.
    During testing:

    1. Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed, beyond the intended weather stripping or other infiltration control measures;
    2. Dampers including exhaust, intake, makeup air, backdraft and flue dampers shall be closed, but not sealed beyond intended infiltration control measures;
    3. Interior doors, if installed at the time of the test, shall be open;
    4. Exterior doors for continuous ventilation systems and heat recovery ventilators shall be closed and sealed;
    5. Heating and cooling systems, if installed at the time of the test, shall be turned off; and
    6. Supply and return registers, if installed at the time of the test, shall be fully open

    R403.2.2 [Duct] Sealing

    1. Post construction test: Total leakage shall be less than or equal to 4 cfm (113.3 L/min) per 100 square feet (9.29 m2) of conditioned floor area when tested at a pressure differential of 0.1 inches w.g. (25 Pa) across the entire system, including the manufacturer’s air handler enclosure. All register boots shall be taped or otherwise sealed during the test.
    2. Rough-in test: Total leakage shall be less than or equal to 4 cfm (113.3 L/min) per 100 square feet (9.29 m2) of conditioned floor area when tested at a pressure differential of 0.1 inches w.g. (25 Pa) across the system, including the manufacturer’s air handler enclosure. All registers shall be taped or otherwise sealed during the test. If the air handler is not installed at the time of the test, total leakage shall be less than or equal to 3 cfm (85 L/min) per 100 square feet (9.29 m2) of conditioned floor area.
      1. Exception: The total leakage test is not required for ducts and air handlers located entirely within the building thermal envelope.

       

    For additional information on residential additions see Blower Door Testing for Additions 

     

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