Best Refrigerant Leak Detector in 2025
Updated on July 2025
#1
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6% Off
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- Heated diode technology for accurate refrigerant leak detection
- Sensitivity of 0.03 oz/yr (1g/a) for reliable performance
- Bright LCD screen featuring bar graphs and numeric data for easy interpretation
- 18-hour battery life on a USB rechargeable lithium-ion battery
- Compatible with all HFC, CFC, HCFC, HFO refrigerants and their blends
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- Heated diode technology for accurate refrigerant leak detection
- Sensitivity of 0.03 oz/yr (1g/a) for reliable performance
- Bright LCD screen featuring bar graphs and numeric data for easy interpretation
- 18-hour battery life on a USB rechargeable lithium-ion battery
- Compatible with all HFC, CFC, HCFC, HFO refrigerants and their blends
#2
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- Traditional coronal sensor featuring a low-energy CPU for improved trigger stability and speed across various refrigerants, including R11, R22, R134A, R404a, R410A, and all halogenated variants.
- 3-second response time with a 6-second warm-up period.
- 7 adjustable sensitivity levels, with the highest sensitivity detecting 0.11 oz/yr.
- Flexible 14-inch stainless steel probe equipped with two alternative sensor tips.
- Modular sensor design for easy maintenance, powered by 2 included C Alkaline batteries, with 24/7 US technician support available via email and phone.
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- Traditional coronal sensor featuring a low-energy CPU for improved trigger stability and speed across various refrigerants, including R11, R22, R134A, R404a, R410A, and all halogenated variants.
- 3-second response time with a 6-second warm-up period.
- 7 adjustable sensitivity levels, with the highest sensitivity detecting 0.11 oz/yr.
- Flexible 14-inch stainless steel probe equipped with two alternative sensor tips.
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#3
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- Cordless operation with rechargeable lithium battery and USB-C charging cable.
- Highly sensitive Japan-made heat dioxide semiconductor sensor for reliable leak detection.
- Adjustable sensitivity settings for customizable detection levels.
- Detects a broad range of refrigerants across various HVAC systems.
- Large color LCD display for clear visibility of leak locations and levels.
- Meets UL1484 safety standards for reliability.
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- Cordless operation with rechargeable lithium battery and USB-C charging cable.
- Highly sensitive Japan-made heat dioxide semiconductor sensor for reliable leak detection.
- Adjustable sensitivity settings for customizable detection levels.
- Detects a broad range of refrigerants across various HVAC systems.
- Large color LCD display for clear visibility of leak locations and levels.
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#4
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- Heated diode sensor provides enhanced accuracy for all halogenated refrigerants compared to traditional sensors.
- First leak detector equipped with a TFT screen, offering clear readings for sensitivity levels, leakage alerts, and battery status.
- Features adjustable sensitivity with high, medium, and low settings, with maximum sensitivity reaching 0.1 oz/year.
- Two front buttons enable quick adjustments to sensitivity levels and muting of the buzzer for straightforward operation.
- Capable of detecting all halogenated gases, including CFCs, HFCs, HCFCs, HCs, HFOs, and various refrigerant blends, with a response time of 1 second.
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- Heated diode sensor provides enhanced accuracy for all halogenated refrigerants compared to traditional sensors.
- First leak detector equipped with a TFT screen, offering clear readings for sensitivity levels, leakage alerts, and battery status.
- Features adjustable sensitivity with high, medium, and low settings, with maximum sensitivity reaching 0.1 oz/year.
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#5
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- Adjustable sensitivity with three modes for accurate refrigerant leak detection, pinpointing leaks as low as 3g/yr (0.1oz/yr) with a flexible gooseneck for hard-to-reach areas.
- Three alert options including sound (90dB), visual cues, and vibration, with a quick mute feature for convenience and enhanced low-light visibility for precise detection.
- Dual display modes on a vibrant TFT screen provide real-time refrigerant concentration levels and trend tracking, with adjustable brightness and energy-saving auto-off.
- Ergonomic design with a rechargeable 2000mAh battery for over 8 hours of use, featuring robust construction that is waterproof, explosion-proof, and dustproof for reliable performance in tough conditions.
- Broad detection capabilities for various refrigerants, including HCFs, HCFCs, CFCs, PFCs, HFOs, and HCs, ensuring versatility for different applications.
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- Adjustable sensitivity with three modes for accurate refrigerant leak detection, pinpointing leaks as low as 3g/yr (0.1oz/yr) with a flexible gooseneck for hard-to-reach areas.
- Three alert options including sound (90dB), visual cues, and vibration, with a quick mute feature for convenience and enhanced low-light visibility for precise detection.
- Dual display modes on a vibrant TFT screen provide real-time refrigerant concentration levels and trend tracking, with adjustable brightness and energy-saving auto-off.
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#6
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- Three adjustable sensitivity settings (High/Medium/Low) with maximum detection sensitivity of 0.1 oz/year, and a 15.5-inch probe for accessing hard-to-reach areas.
- 3000 mAh lithium battery with a working voltage of 3.7 V, allowing approximately 7 hours of use after a full charge that takes around 180 minutes.
- Device emits rapid beeps upon leak detection with a mute function to silence the alarm when needed.
- LED display provides real-time readings of sensitivity and leakage levels for effective monitoring and improved detection accuracy.
- Capable of detecting all halogenated gases including HFCs, HCFCs, and CFCs, enabling precise identification of refrigerant leaks.
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- Three adjustable sensitivity settings (High/Medium/Low) with maximum detection sensitivity of 0.1 oz/year, and a 15.5-inch probe for accessing hard-to-reach areas.
- 3000 mAh lithium battery with a working voltage of 3.7 V, allowing approximately 7 hours of use after a full charge that takes around 180 minutes.
- Device emits rapid beeps upon leak detection with a mute function to silence the alarm when needed.
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#7
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- Infrared refrigerant leak detection technology
- Advanced infrared sensor for precise detection
- Large backlit LCD display for visible information
- High sensitivity of better than 0.03 oz/yr (1g/a)
- Compatible with HFC, CFC, HCFC, HFO refrigerants and blends
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- Infrared refrigerant leak detection technology
- Advanced infrared sensor for precise detection
- Large backlit LCD display for visible information
- High sensitivity of better than 0.03 oz/yr (1g/a)
- Compatible with HFC, CFC, HCFC, HFO refrigerants and blends
#8
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- Sensitivity of 0.25 oz./year (7 g/year) for precise detection
- Effectively detects a range of refrigerants, including CFCs, HCFCs, HFCs, and HFOs
- Equipped with a heated diode sensor for dependable leak detection
- Sensor has a lifespan of 100 hours under normal usage
- Includes a durable carrying case for portability
- Supported by US-based technicians via email and phone
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- Sensitivity of 0.25 oz./year (7 g/year) for precise detection
- Effectively detects a range of refrigerants, including CFCs, HCFCs, HFCs, and HFOs
- Equipped with a heated diode sensor for dependable leak detection
- Sensor has a lifespan of 100 hours under normal usage
- Includes a durable carrying case for portability
- Supported by US-based technicians via email and phone
#9
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- WJL-6000Pro is an upgraded refrigerant leak detector with improved sensitivity and diagnostic features including an LCD display for gas leakage levels and sensitivity.
- Enhanced sensitivity reaches up to 0.11 oz/yr, with auto-calibration for adapting to various refrigerant concentrations and manual sensitivity adjustment capabilities.
- The LCD screen provides a clear visualization of refrigerant leakage levels and sensitivity settings.
- Features dual alarm systems, including audible and visual alerts that increase in frequency with higher gas leakage levels, facilitating quick leak localization.
- Compatible with all halogenated refrigerants such as CFCs, HFCs, and blends, with a rapid response time of 3 seconds. The product is backed by a one-year warranty and 24/7 customer support.
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- WJL-6000Pro is an upgraded refrigerant leak detector with improved sensitivity and diagnostic features including an LCD display for gas leakage levels and sensitivity.
- Enhanced sensitivity reaches up to 0.11 oz/yr, with auto-calibration for adapting to various refrigerant concentrations and manual sensitivity adjustment capabilities.
- The LCD screen provides a clear visualization of refrigerant leakage levels and sensitivity settings.
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#10
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- Includes infrared and heated diode sensors for enhanced accuracy and a sensor life of up to 10 years.
- Offers adjustable sensitivity levels (high, medium, low) with a maximum detection capability of 0.14 oz/yr.
- Capable of detecting all halogen refrigerants, including CFCs, HFCs, HCFCs, HCs, HFOs, and various blends such as R11, R22, R404a, R410a, R600a, R1234yf, and AZ-50.
- Equipped with a large 2.8-foot display for clear leak detection indication, ensuring a quiet operating environment.
- Supported by a US-based team providing 24/7 customer service and technical assistance.
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- Includes infrared and heated diode sensors for enhanced accuracy and a sensor life of up to 10 years.
- Offers adjustable sensitivity levels (high, medium, low) with a maximum detection capability of 0.14 oz/yr.
- Capable of detecting all halogen refrigerants, including CFCs, HFCs, HCFCs, HCs, HFOs, and various blends such as R11, R22, R404a, R410a, R600a, R1234yf, and AZ-50.
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