Call us or book online. Technical reports receive review appropriate to the service and scope.
336-373-1538ESG performs independent duct leakage testing, blower door testing, and airflow verification for new construction and HVAC systems. Fast scheduling. Digital documentation. Reports formatted for inspectors and lenders.
ESG provides the independent third-party testing and documentation that builders, HVAC contractors, and inspectors rely on at project close-out.
Pressurized testing of duct systems to measure leakage and compare the measured result against the energy code criterion that applies to the project. Commonly required for new construction under the IECC and many state energy codes.
Code RequiredWhole-building air tightness testing that measures how much air leaks through the building envelope. As homes become more energy efficient, this test documents where the building sits on the balance between tightness and ventilation.
Energy CodeMeasurement of actual airflow at registers, exhaust fans, and ventilation systems, compared against the design values provided for the project. Identifies imbalances and deficiencies at the locations measured.
HVAC PerformanceTesting for pressure imbalances between rooms that can indicate airflow problems, moisture intrusion paths, and comfort complaints. Exhaust fan performance is measured against the ventilation rate required for the project.
Comfort & MoistureAs new construction gets more energy efficient, unintended indoor air quality consequences increase. Without proper verification, tighter homes can suffer from elevated CO₂, trapped humidity, odor complaints, and short-cycling HVAC systems.
When ESG tests your ductwork and airflow, the documentation is produced by a third party with no financial interest in the result. That gives you third-party records to point to if a buyer complaint, warranty claim, or lender question arises after closing.
We do not install, service, or repair HVAC systems. We only test and document. That independence is what makes our reports credible.
Schedule TestingDuct leakage testing is typically performed after the duct system is roughed in and before drywall is closed. This allows any leaks to be found and corrected before they're inaccessible. A final test may be required at certificate of occupancy.
Duct leakage testing is commonly required under the NC Energy Conservation Code for new construction. The specific requirement depends on the edition of the code adopted by your jurisdiction. ESG is familiar with NC, VA, and TN requirements.
Duct leakage testing measures how much air leaks out of the duct system itself. Blower door testing measures how much air leaks through the entire building envelope. Both are often required and address different systems.
ESG identifies the location and magnitude of leakage. The HVAC contractor or builder can then seal the leaks and we retest. We document both the initial test and the retest for the inspection record. A pass or fail reflects the measured result against the code criterion and project information that applies at the time of testing, and the authority having jurisdiction makes the final determination on acceptance.
Both. ESG works with high-volume production builders who need reliable scheduling across multiple homes, and with custom home builders who need detailed documentation for higher-end projects.
Yes. ESG offers moisture and mold assessments during construction as a separate service. If you need both duct testing and moisture documentation for a project, we can coordinate both efficiently.
ESG works with builders across NC, VA, and TN. Fast scheduling, digital reports, and independent documentation formatted for inspectors and lenders.
Mon-Fri 8:30am-5pm · Environmental@go-esg.com