Refrigerant Leak Detector Buying Guide 2026: Heated Diode vs. Infrared

Are you preparing for your EPA 608 or NATE certification? Choosing the right refrigerant leak detector is a critical skill. This 2026 guide breaks down everything you need to know about the two dominant sensor technologies: heated diode and infrared (NDIR). We cover: - The pros and cons of heated diode vs. infrared sensors. - Why the 2026 transition to A2L refrigerants (R-454B, R-32) makes your tool choice a safety issue. - Key models from Fieldpiece, Elitech, and Inficon for every budget. - The EPA-approved 3-step leak detection procedure you'll see on your exam. Read the full 2026 buying guide on our blog: https://open-exam-prep.com/blog/best-refrigerant-leak-detector-hvac-2026 Prepare for your exam with our free study materials: - EPA 608 Study Guide: https://open-exam-prep.com/study-guides/epa-608 ⏱️ Timestamps: 0:00 - Introduction 0:05 - Scene 1 0:44 - Scene 2 1:19 - Scene 3 1:56 - Scene 4 2:28 - Scene 5 3:03 - Scene 6 3:40 - Next steps Recommended study resources: Disclosure: As an Amazon Associate, Open Exam Prep earns from qualifying purchases. We may earn a commission if you buy through these links. - EPA 608 Study Guide: Crush the EPA 608 Certification Exam on Your First Try and Accelerate Your HVACR Career | Comprehensive Test Prep, Practice Questions, and Expert Insights: https://www.amazon.com/dp/B0C9SNDVTY?tag=openexamprep-20 - ESCO Institute EPA Section 608 Preparatory Manual: https://www.amazon.com/dp/1930044607?tag=openexamprep-20 - EPA 608 CERTIFICATION STUDY GUIDE 2026-2027: Complete Guide to EPA 608 Exam Prep, Refrigerant Handling, and HVAC Safety: https://www.amazon.com/dp/B0GFNHLMRT?tag=openexamprep-20