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

Choosing the right HVAC refrigerant leak detector is critical for passing your EPA 608 exam and for professional service work. In this 2026 buying guide, we compare the two main sensor technologies: heated diode vs. infrared (NDIR). We'll cover: ✅ The pros and cons of each technology. ✅ Why heated diode sensors cause false positives. ✅ Why infrared sensors are a better long-term value. ✅ Top models from Fieldpiece, Elitech, and Inficon. ✅ The 3-step leak detection procedure you need to know for the EPA 608 exam. Read the full guide on our blog: https://open-exam-prep.com/blog/best-refrigerant-leak-detector-hvac-2026 Prepare for your HVAC certification exams with our free study guides and practice questions at Open Exam Prep. ⏱️ Timestamps: 0:00 - Introduction 0:05 - Scene 1 0:39 - Scene 2 1:14 - Scene 3 1:47 - Scene 4 2:21 - Scene 5 2:52 - Scene 6 3:26 - 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