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Duct Leakage Affidavit (New Construction) - energy wsu 2026
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- Click ‘Get Form’ to open the Duct Leakage Affidavit in the editor.
- Begin by entering the Permit Number and House Address or Lot Number in the designated fields. Ensure accuracy for proper documentation.
- Fill in the City and Zip Code to specify the location of the construction project.
- Input the Conditioned Floor Area in square feet, which is essential for calculating duct leakage rates.
- Select your source of information by circling either Plans, Estimated, or Measured as applicable.
- Indicate whether duct tightness testing is required and if an air handler is present during testing by circling 'yes' or 'no'.
- Complete the calculations for maximum duct leakage and post-construction leakage based on floor area provided.
- Certify accuracy by filling in your Company Name, Technician Name, Signature, Date, and Phone Number at the bottom of the form.
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| Versions | Form popularity | Fillable & printable |
|---|---|---|
| 2013 | 4.9 Satisfied (56 Votes) |
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Is a duct leakage test required?
Ductwork that is designed to operate at static pressures greater than 3 inches water column (747 Pa) and all ductwork located outdoors shall be leak-tested in accordance with the SMACNA HVAC Air Duct Leakage Test Manual.
What are the requirements for duct leakage?
A HERS rater should confirm and document that duct leakage to the outdoors is the greater of 4 cubic feet of air flow per minute at 25 pascals (CFM25) per 100 ft2 of conditioned floor area or 40 CFM25 using a RESNET-approved testing protocol, such as a duct blaster test.
What is the acceptable duct leakage percentage?
Duct Leakage Criteria The leakage test must meet the following criteria: If the test is done on the rough-in stage of the HVAC installation, total duct leakage cannot exceed a 3% leakage rate or 3 CFM per 100 square feet of conditioned floor area.
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People also ask
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.
What is a duct leakage?
Duct leakage is when conditioned air gets distributed from a SEER AC unit or AFUE furnace and leaks through holes/cracks/seams in the ductwork (a.k.a. air ducts) before it docHubes the desired rooms/spaces in a home or building. According to ASHRAE (industry authority for HVAC stuff), 75% of buildings have duct leakage.
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.
What are the duct leakage requirements for 2012 IECC?
The 2012 IECC limits the leakage to 4 cfm per 100 ft2 of conditioned floor area when the air handler is installed and 3 cfm when it is not installed.
How much can your ducts leak before they are out of the title 24 range?
of Title 24, Part 6 shall be considered satisfied if one of the following two conditions is met: 1. the measured total duct leakage is less than 15% of the total fan flow, where the duct leakage shall be determined pursuant to the procedures in section 4.