10 Best r134a refrigerant leak detector

Freon leak detector triggers on R22, R134A, R404a, R410A and all halogenated refrigerants including HFCs, CFCs,HCFCs and blends.

Response within 3 seconds; Warm up in 6 seconds.

7 Adjustable Sensitivity; Maximum sensitivity is 0.21oz/yr.

Audible and visual gas leakage indicators and dual battery indicator.

A flexible probe around 7.9-inch allow detections in difficult and hard-to-reach areas.

[Widely Use & Portable]: Test all halogen gases including /fluorine/. Such as CFCs R12, R11 R500 R503; HCFCs R22, R123, R124, R502; HFCs R134a R404a R125 etc...Still can detect other compounds, such as AZ - 50, HP62, MP39, with carrying case

[High Accuracy&Stable]: High accuracy gas tester, shows you exactly where the leak is. 7 degree munual adjustable sensitity， also with automatically adjustment to the optimum detecting state; Built-in voltage, ultra-low power IC design, making yosoo freon detector more stable

[Only Few Seconds You Will Find Leak]: No need dye, just batteries in turn , and turned it on, Stared checking lines, Bamb, Yosoo halogen gas detectors will tell you where the leak is, it took less than a minute to find

[Beeping and Light Flash Warning]: You will never miss any leak

[What You Get]: Yosoo refrigerant freon leak detector(no battery included) , Yosoo worry guarantee and friendly customer service

【High Sensitivity and Adjustable】This leak detector hvac uses a U.S.-manufactured semiconductor sensor with three adjustable sensitivity levels (up to 0.14 oz./yr.) and a 16-inch flexible probe for tight spaces.

【Audible & Visual Alarms with Mute Option】When a leak is detected, the 2.8-inch TFT color screen of the refrigerant detector clearly indicates the leak concentration level, while the audible alarm beeps at an increasing frequency as the leak intensifies. Press the MUTE button to turn on/off the buzzer.

【2.8-inch TFT Color Display】Equipped with an advanced color graphic display, this R134a leak detector ensures optimal visibility and readability in both low-light conditions such as basements and brightly lit outdoor environments.

【Smart Functional Capabilities】Intelligent features including Peak Mode (captures the maximum leakage reading) and Reset Function (minimizes false alarms by recalibrating the sensor) make it a user-friendly and reliable tool for HVAC professionals.

【Durable and Oil-Resistant Construction】Designed for rugged use, the freon sniffer features an oil-resistant and impact-resistant housing, ensuring long-term reliability in demanding repair and maintenance scenarios.

【Detect All Refrigerant & Combustible Gases】The leak detector hvac detects [CFCs: R11, R12, R13, R113, R114, R115, R500, R502, R503] [HCFCs: R22, R123, R124, R141b, R142b, R401A, R401B, R402A, R402B, R408A, R409A] [HFCs: R32, R125, R134a, R143a, R152a, R404A, R407C, R410A, R410B, R417A, R422D, R427A, R438A, R448A, R449A, R452B, R453A, R507] [HFOs: R1234yf, R1234ze(E), R1233zd(E), R1336mzz(Z), R514A, R1224yd(Z), R1243zf] [Blends: R401A, R404A, R407C, R410A, R507, AZ-50 (R507), HP62 (R404A), MP39 (R401A), NU-22 (R422D)] [PFC: PFC-14, PFC-116, PFC-218, etc] [HCs(Hydrocarbon): R50, R290, R600a etc.][5%hydrogen/95% nitrogen Racer Gas] [A2, A2L, A3 refrigerants ] Propane Methane Ethane

【Professional HVAC & DIY Ready】Trusted by HVAC technicians, maintenance professionals, and DIY enthusiasts, the ALD-200 is ideal for quick leak detection on heat pumps, air conditioners, refrigeration units, and automotive A/C systems. Detects leaks with precision comparable to high-end detectors at a fraction of the cost.

【Detect Micro & Slow Leaks】Quickly locate small or slow refrigerant leaks that can be missed by dye, soap, or low-sensitivity detectors. Adjustable sensitivity up to 0.14 oz./yr. ensures reliable detection for even the hardest-to-find leaks, saving troubleshooting time and repair costs.

【Easy Setup & Accurate Calibration】Designed for ease of use: fully charge before first use, warm up the sensor, and perform auto-zero calibration in clean air. The Peak Mode and Reset Function help reduce false alarms, ensuring consistent and accurate readings every time.

【Battery & Durable Field-Ready Design】Built-in rechargeable battery supports a full day of typical HVAC service work. Rugged, oil-resistant housing protects the sensor and electronics in demanding field conditions. Lightweight and compact for easy storage in toolboxes or service vans.

【Upgraded Version of WJL-6000】WJL-6000Pro Freon tester is the upgraded version of the classic WJL-6000 with higher sensitivity sensor , readable refrigerant gas leakage level and multiple alarm functions.

【Higher Sensitivity】7.9 inch flexible sensing tip with with higher sensitivity(up to 0.14oz/yr.) that compared with WJL-6000(0.21oz/yr), the refrigerant leak detector hvac can continuously work for 50 hours with 4*AAA batteries power supplied.

【Visualization of leakage levels】The new upgraded LCD screen of the detector de fugas de refrigerante will display the leakage level of refrigerant gas. In addition, adjust the sensitivity by pressing the button, LCD screen will display sensitivity level.

【Two-Color LED Light】The halogen leak detector comes with UV lamp + white flashlight. UV lamp is used with fluorescent agent, white light is suitable for illuminating dark and small places.(LED light contains battery)

【Multi-Alarms】Equipped with muti audible and visual alarms in the 134a freon leakage tester, help you to locate where the leakage is easily.

【Precise Leak Detection】: Adopt the most advanced sensing technology and microprocessor chips to help users accurately locate the leakage points of various refrigerants, such as CFC, HFC, HCFCs, HC, HFO, etc.

【Adjustment of Sensitivity】: The unit features vari-speed sensitvity adjustment and can be adjusted during the course of detecting. Clockwise adjusting means high sensitivity and in reverse means low.

【Leak Alarm】: When the leaked gas is detected, the audible tone will change to a "siren" typesound. More refrigerant, more siren. At the same time, Indicator light is flashing quickly.

【KIT Included】: This kit includes a UV lamp and UV resistant glasses, equipped with 3 long-lasting AAA batteries. UV lamp can help you locate leaks in your car's air conditioning system. High quality plastic safety glasses ensure safe Freon leak testing in dark places and block UV rays to protect your eyes.

【Buy with Confidence】: We provide you with 100% satisfaction guarantee. If there is any problem with your refrigerant leakage detector, please contact us, and we will provide you with return, exchange and repair.

Upgraded version of WJL-6000. Traditional corona sensor with updated analogue circuit, fast triggers on R11, R22, R134A, R404a, R410A and all halogenated refrigerants including HFCs, CFCs,HCFCs and blends.

6s preheating time, instantaneous response; 6 adjustable sensitivity, sensitivity of 0.21oz/yr.

A flexible probe around 8.26 inches allows detections in difficult and hard-to-reach areas.

Direct status indication with audible & visual leakage alarm indicators and dual colour battery indicators. Battery by 4 AAA batteries (Not included)

24/7 US Technician Support via Email and Phone.

【Dual Display Options】 Switch between PPM and LEL% display modes to match your specific detection requirements.

【Multi-Alert System】 Instantly detects leaks with clear digital readings and an audible alarm. The mute function allows you to silence the buzzer when needed.

【Enhanced Durable Probe】 Built with an all-metal, dirt-resistant, and wear-proof design, ensuring long-lasting performance for maintenance professionals.

【Long-Lasting 1800mAh Battery】 Enjoy extended operation with over 20 hours of continuous use. Includes a USB-C cable for quick and convenient recharging.

【Detect All Refrigerant Gases】The refrigerant sniffer detects [CFCs: R12, R11, R500, R503 etc.] [HCFCs: R22, R123, R124, R502 etc.] [HFCs: R134a, R404a, R125, R438a etc.] [HFOs: R1234 etc.] [HCs(Hydrocarbon): R290, R600a etc.] [ Blends: AZ-50, HP62, MP39, R410a etc.] [PFC: PFC-14, PFC-116, PFC-218, etc] [5%hydrogen/95% nitrogen Racer Gas]

【Two-Color LED Light】The Freon tester comes with UV lamp + flashlight. UV lamp is used with fluorescent agent, white light is suitable for illuminating dark and small places.

【Upgraded Version of WJL-6000】WJL-6000Pro halogen leak detector is the upgraded version of the classic WJL-6000 with higher sensitivity. New upgraded LCD screen displays sensitivity level and refrigerant gas leakage level, even multiple alarm functions.

【Higher Sensitivity】7.9 inch flexible sensing tip with with higher sensitivity(up to 0.14oz/yr.) that compared with WJL-6000(0.21oz/yr), The r134a leak detector can continuously work for 50 hours with 4*AAA batteries power supplied.

【Multi-Alarms】The audible and visual display alarms in the detector de fugas de refrigerante can easily help you to locate where the leakage is. Once leaking gas is detected, the beep frequency will increase. The more gas leaked, the quickly the buzzer beeps, at the same time, the LCD screen displays the leakage level.

【Visualization of leakage levels】The new upgraded LCD screen will display the leakage level of refrigerant gas. In addition, adjust the sensitivity by pressing the button of the r410a leak detector, LCD screen will display sensitivity level.

【Detect All Refrigerants Gases】The leak detector hvac detects [CFCs: R11, R12, R13, R113, R114, R115, R500, R502, R503] [HCFCs: R22, R123, R124, R141b, R142b, R401A, R401B, R402A, R402B, R408A, R409A] [HFCs: R32, R125, R134a, R143a, R152a, R404A, R407C, R410A, R410B, R417A, R422D, R427A, R438A, R448A, R449A, R452B, R453A, R507] [HFOs: R1234yf, R1234ze(E), R1233zd(E), R1336mzz(Z), R514A, R1224yd(Z), R1243zf] [Blends: R401A, R404A, R407C, R410A, R507, AZ-50 (R507), HP62 (R404A), MP39 (R401A), NU-22 (R422D)] [PFCs: R14 (PFC-14), R116 (PFC-116), R218 (PFC-218), R3110 (PFC-3-1-10), R4112 (PFC-4-1-12), R5114 (PFC-5-1-14)]

【Designed for HVAC & Automotive AC Repair】Ideal for residential air conditioners, heat pumps, refrigeration systems and vehicle AC diagnostics.

【Detects CFC, HCFC, HFC & HFO Refrigerants】Compatible with R22, R410A, R134a, R1234yf and most common refrigerants used in HVAC and automotive systems.

【Battery Powered for Field Service Use】Powered by 4 AAA batteries for up to 50 hours of continuous operation, perfect for mobile HVAC technicians.

【Cost-Effective Leak Detection Tool】A reliable and affordable refrigerant leak detector for homeowners, DIY repairs and professional technicians.