(Inter NACHI) Certified Duct Leakage Tester (CDLT) Ductwork accounts for roughly 20-30% of conditioned air loss in typical homes, yet few technicians understand pressure-decay testing protocols or blower-door methodologies well enough to diagnose leaks accurately. This exam covers sealing techniques, measurement standards, and how to interpret results across residential systems of varying complexity.
| Exam Name | (Inter NACHI) Certified Duct Leakage Tester |
| Exam Code | CDLT |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |
