Best Freon Leak Detector 1234yf in 2025
Updated on July 2025
#1
Recommended
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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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#2
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21% Off
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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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#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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- Includes three air conditioning leak detection tools, designed to meet various testing needs.
- Detects refrigerant leaks within three seconds of activation, with a sensitivity of 0.21 oz/yr for multiple refrigerants such as R22, R134A, and R410A.
- Lightweight aluminum construction with 68 LED lights, providing illumination up to 300 meters for nighttime use, and features a convenient hanging loop for portability.
- UV protective glasses suitable for a variety of activities, offering protection against stains, sand, and bright light during tasks like gardening and woodworking.
- Versatile leak detector useful not only for gas and fluid leaks but also for testing items like stamps and driving licenses.
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- Includes three air conditioning leak detection tools, designed to meet various testing needs.
- Detects refrigerant leaks within three seconds of activation, with a sensitivity of 0.21 oz/yr for multiple refrigerants such as R22, R134A, and R410A.
- Lightweight aluminum construction with 68 LED lights, providing illumination up to 300 meters for nighttime use, and features a convenient hanging loop for portability.
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#5
26% Off
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- High sensitivity with three adjustable modes, achieving a maximum detection of 0.14 oz/year, featuring a 16-inch probe for accessing tight spaces.
- Audible and visual alerts display leak level, with a mute function available.
- User-friendly with a reset function to prevent false positives, peak value recording, and a rechargeable battery offering 6 hours of use.
- Detects a wide range of halogenated gases including CFCs, HCFCs, HFCs, HFOs, and hydrocarbons.
- Color graphic display visualizes gas detection levels with a changing bar graph to indicate proximity to leak.
- Durable and oil-resistant design suitable for fieldwork, ensuring reliability in tough conditions.
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- High sensitivity with three adjustable modes, achieving a maximum detection of 0.14 oz/year, featuring a 16-inch probe for accessing tight spaces.
- Audible and visual alerts display leak level, with a mute function available.
- User-friendly with a reset function to prevent false positives, peak value recording, and a rechargeable battery offering 6 hours of use.
- Detects a wide range of halogenated gases including CFCs, HCFCs, HFCs, HFOs, and hydrocarbons.
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#6
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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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#7
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- Advanced solid-state semiconductor sensor technology for detecting a wide range of refrigerants, including CFCs, HCFCs, HFCs, and HFOs.
- Adjustable sensitivity with three levels and the ability to detect leaks as small as 0.1 oz/year; features a 9-level concentration display for accurate leak identification.
- Audible alarms increase in pitch as you approach a refrigerant leak; the digital display indicates severity with a scale of 1 to 7.
- Durable design with a long sensor lifespan and a flexible 16.9-inch probe for accessing tight spaces; runs on 4 AAAA batteries for ease of use.
- User-friendly interface for quick adjustments and immediate leak detection, suitable for both professionals and beginners.
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- Advanced solid-state semiconductor sensor technology for detecting a wide range of refrigerants, including CFCs, HCFCs, HFCs, and HFOs.
- Adjustable sensitivity with three levels and the ability to detect leaks as small as 0.1 oz/year; features a 9-level concentration display for accurate leak identification.
- Audible alarms increase in pitch as you approach a refrigerant leak; the digital display indicates severity with a scale of 1 to 7.
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#8
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- Three sensitivity modes with a maximum detection capability of 0.03 oz./yr for precise leak location in various conditions; warm-up time of 30 seconds and a quick response time of 3 seconds for efficient troubleshooting.
- Upon detecting a leak, the device emits an urgent sound and displays the leak level on the screen, with color indicators for high (red), medium (yellow), and no leakage (green); a MUTE button is available for silencing the alerts.
- Reset function allows for interference-free leak detection, while the Peak function tracks the maximum leakage value; features a 15.8-inch probe for access to hard-to-reach spots and a large 2.8-inch LCD screen for clear results.
- Equipped with a rechargeable 3000mAh battery offering up to 6 hours of continuous use; meets SAE J2791 and SAE J2913 standards, allowing for use up to 300 hours, significantly longer than competitive models.
- Compatible with various refrigerants including CFCs, HCFCs, HFCs, HFOs, HCs, and blends, ensuring versatility for different applications.
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- Three sensitivity modes with a maximum detection capability of 0.03 oz./yr for precise leak location in various conditions; warm-up time of 30 seconds and a quick response time of 3 seconds for efficient troubleshooting.
- Upon detecting a leak, the device emits an urgent sound and displays the leak level on the screen, with color indicators for high (red), medium (yellow), and no leakage (green); a MUTE button is available for silencing the alerts.
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#9
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- Compatible with R1234yf systems
- Specifically designed for R-1234yf refrigerant
- Helps prevent refrigerant leaks
- Easy to use in R1234yf systems
- Aids in maintaining system efficiency
- Non-intrusive solution for leak management
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- Compatible with R1234yf systems
- Specifically designed for R-1234yf refrigerant
- Helps prevent refrigerant leaks
- Easy to use in R1234yf systems
- Aids in maintaining system efficiency
- Non-intrusive solution for leak management
#10
25% Off
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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
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