Top 5 Refrigerant Leak Detectors for HVAC Techs (2025 Update)

Whether you’re servicing residential units, mini splits, or full commercial systems, finding refrigerant leaks fast is mission-critical. The right detector doesn’t just save time — it saves callbacks, refrigerant, and reputation.

Below are the Top 5 Refrigerant Leak Detectors for HVAC Techs in 2025. Chosen for accuracy, speed, durability, and value — these detectors are the real deal in the field.

1. Best Overall Refrigerant Leak Detector

INFICON TEK-Mate Refrigerant Leak Detector

• Heated diode sensor for all common refrigerants
• Field-proven with adjustable sensitivity
• Simple, rugged, and highly reliable

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2. Best Budget Leak Detector

Elitech ILD-200 Advanced Refrigerant Leak Detector

• Infrared sensor with 10-year lifespan
• High sensitivity up to 0.14oz/yr
• Rechargeable battery with LCD display

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3. Best Premium Leak Detector

Fieldpiece DR82 Infrared Leak Detector

• Infrared sensor for longer life and minimal false positives
• 3 sensitivity levels + mute mode
• Rechargeable lithium battery, 10-hour runtime

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4. Most Sensitive Leak Detector

CPS LS790B Leak-Seeker II

• Ion-pump sensor detects leaks as small as 0.1 oz/yr
• 10 sensitivity levels with automatic calibration
• High-intensity bar graph display

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5. Most Portable Leak Detector

Aprvtio ALD-200 PRO Refrigerant Leak Detector

• Detects all halogenated gases including R410A, R22, R134a, R1234yf
• 16-inch flexible probe for hard-to-reach areas
• Visual and audible alarms with adjustable sensitivity

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Conclusion

No matter your budget or job type, there’s a leak detector here to fit your toolkit. These models are trusted by pros across the HVAC world and will keep you one step ahead of hidden leaks and costly callbacks.

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