Skills Hub
leak-detection-repair
Electronic Leak Detection
Always tested on the EPA 608
Use a calibrated electronic leak detector to find small leaks.
About this skill
Electronic leak detection using a calibrated detector, sweeping the probe along all fittings, joints, and brazed connections at approximately 1 inch per second.
10 total steps
4 critical steps
Time limit: 10 min
What graders are watching for
- 1Detector must be calibrated for the specific refrigerant
- 2Sweep at 1 inch per second
- 3Modern refrigerants (R-1234yf) are heavier than air — sweep low
Common mistakes (and how to avoid them)
- !Using a detector calibrated for a different refrigerant
- !Skipping the calibration check before use
- !Moving the probe too fast (misses small leaks)
Practice this skill step-by-step
The static walkthrough above is the marketing overview. The full step-by-step interactive practice (with critical-step highlighting, per-step "why this matters" rationale, and what graders watch for on each individual step) is unlocked with a subscription.