Total duct leakage
With the system prepared for testing, airflow at a 25-pascal pressure difference can be reported as CFM25. Review the measured result and the conditions recorded during the test.
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New York Energy Assessments
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New York
Energy AssessmentsBook an assessment MenuDuct leakage testing.
Measure the leaks.
A little preparation.
Let’s find your
New YorkEnergy AssessmentsBook an assessment Menu
DUCTS · AIRFLOW · PERFORMANCE
Duct leakage testing.
Check the delivery.
A duct system is part of your home’s comfort picture. Duct leakage testing helps investigate leakage and informs discussions about distribution improvements.
KNOW WHAT COMES NEXT
A clear path through your project.
Confirm the scope, understand the findings, and decide on your next step with the information you need.
- 01
Define the objective
Discuss the duct system, accessible areas, and whether testing is for diagnosis or a particular project requirement.
- 02
Carry out the agreed test
Prepare and test the system under the confirmed scope, recording relevant measurements.
- 03
Explain the findings
Review the results, any inspection limitations, and recommendations for further investigation or work.
UNDERSTAND YOUR DUCTS
Measure the leaks.
Improve the delivery.
A calibrated duct-testing fan measures leakage under controlled test conditions. Confirm the test type, system access, and documentation needed for your project before scheduling.
Leakage to outdoors
Leakage to outdoors is a separate testing objective from total leakage. Discuss whether it belongs in the scope and what access and additional testing are needed.
Sealing & follow-up
Use the findings to prioritize accessible joints, boots, plenums, and returns. Discuss suitable repairs and verification testing alongside airflow and distribution concerns.
BEFORE WE VISIT
A little preparation.
A more useful conversation.
- Arrange access to equipment and supply/return locations.
- Share any plans, previous test reports, or project requirements.
- Ask which parts of the system must be accessible.
Does this test measure every comfort issue?
No. Leakage is one part of duct performance. Airflow, distribution, insulation, and equipment conditions may also need review.
Can you test for a project requirement?
Share the exact requirement before scheduling so the test scope and documentation can be confirmed.
Should I repair the ducts before testing?
Discuss the objective first. Baseline testing may help guide a project; verification testing may follow completed work.
START WITH YOUR HOME
Let’s find your
next step.
Tell us where you are and what you’d like to improve.
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