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Nc duct leakage test form 2025

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The document outlines the requirements for duct sealing and air leakage testing as per the 2012 North Carolina Energy Conservation Code. It specifies that all ducts, air handlers, and related components must be sealed, with a maximum allowable duct leakage of 6 CFM per 100 ft² of conditioned floor area. Detailed testing procedures are provided, including equipment setup and reporting requirements. The testing must be conducted by qualified professionals, and results must be documented on a specific certificate.

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Click ‘Get Form’ to open the nc duct leakage test form in the editor.
Begin by entering the property address in the designated field. This is crucial for identifying the location of the HVAC system being tested.
Next, specify the HVAC system number and describe the area of the home served by this system. This information helps in organizing multiple tests if applicable.
Record the CFM25 total and the conditioned floor area (CFA) served by that system. Use these figures to calculate air tightness as per guidelines.
Follow up by calculating CFM25 x 100 divided by CFA and enter this result in the provided space. Ensure it meets compliance standards.
Indicate where the fan attachment was located, then fill in your company name and contact information for verification purposes.
Finally, sign and date the form to complete it. Make sure all fields are filled accurately before submission.

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2018	4.1 Satisfied (58 Votes)
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How to test for duct leakage?

The ENERGY STAR Version 3 Rev 11 air leakage criteria specify that duct air leakage must be 4 CFM25 per 100 ft2 of conditioned floor area or 40 CFM25, whichever is greater, at rough-in or 8 CFM25 per 100 ft2 of conditioned floor area or 80 CFM25, whichever is greater, at final.

How much does a duct leakage test cost?

The test attempts to measure the CFM25 value for leakage in the duct system to outside of the conditioned space. Standard: The measured duct leakage must not exceed 0.06 CFM25 x floor area (in square feet) served by the system.

How to test ductwork for leaks?

For a typical home, testing can range from $100 to $450 and repairs often cost between $300 and $1,500.