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Duct leakage test report

Duct leakage test report 2026

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The document is a Duct Leakage Test Report that assesses compliance with the 2017 Florida Building Code for energy conservation. It includes job information, duct leakage test results for multiple systems, and specifies requirements for qualifying as 'substantially leak free.' The report outlines testing methods and compliance criteria, including necessary signatures and verification by licensed individuals.

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Click ‘Get Form’ to open the duct leakage test report in the editor.
Begin by filling out the Job Information section. Enter the Builder's name, Address, City, Community, Lot, Unit, State, Jurisdiction, and ZIP code accurately.
Proceed to the Duct Leakage Test Results section. For each system (System 1, System 2, System 3), input the CFM25 values as measured during testing.
Calculate and enter the sum of any additional systems in the designated field. Ensure that you follow the guidelines for qualifying as 'substantially leak-free' based on whether an air handler unit is installed.
Complete the Performance or ERI Method section by entering relevant QN values and ensuring they meet specified criteria from forms R405-2017 or R406-2017.
Fill in details for Testing Company and Phone number. Finally, have the tester sign and date at the bottom of the form to verify compliance with Florida Building Code requirements.

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What is the standard for duct leakage testing?

Based on the protocol for Total Leakage Testing, or Leakage Testing to Outdoors duct leakage in new construction shall not exceed 0.06 CFM25 x floor area (in square feet) served by the system for leakage to outdoors or 0.08 CFM25 x floor area (in square feet) served by the system for total leakage.

What is the procedure for duct leakage testing?

Test Procedure: The system (ductwork or piping) is pressurised to a specified level using a fan or a blower. The rate of air loss is measured, usually by how much airflow is needed to maintain the test pressure. The leakage rate is compared to standard allowable limits (e.g., per DW/144 for ductwork).

What is the standard for duct leakage test?

Standard: The measured duct leakage must not exceed 0.06 CFM25 x floor area (in square feet) served by the system. Duct testing device. Manometer (a second manometer is helpful, but not required) Tape and paper or duct mask to seal registers.

How do you calculate duct leakage?

A percentage of volume flow is also a simple calculation for the testing contractor. For example, suppose you have a duct system where the duct system is handling 14,000 cfm. If the allowable leakage is specified as 2%, then the allowable leakage is 0.02 x 14,000, or 280 cfm.

What is the acceptable leakage for air ducts?

When low-pressure VAV and CAV systems are used, the total allowable leakage should not exceed 2 percent, including the box and downstream ductwork. The box and downstream ductwork should be tested at the lower 1-inch wg static. This is the minimum for most systems currently used in todays design practices.

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Whats a good duct leakage test?

Verification can take place via either a post-construction test or a rough-in test. For the post-construction test, leakage measurement must be made across the entire system, including the manufacturers air handler enclosure, with all register boots taped or sealed at a test pressure of 0.1 inches w.g. (25 Pa).

How do you test for duct leakage?

A duct leakage test can be performed by either pressurizing or depressurizing the ductwork. Ductwork that is outside the building envelope, such as in an unconditioned attic or crawlspace, should be pressurized so as to not bring in unwanted contaminants such as dust.

What is the Ashrae standard for duct leakage?

ASHRAE Standard 90.13 (section 6.4. 4.2. 2) requires air leakage testing of 100% of all outside ductwork and 25% of representative sections of all other ductwork designed to operate at a static pressure in excess of 3- inch water gauge.

Duct leakage test report 2026

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