Best Elitech Leak Detection Tools in 2026

NSF certified for use around food

Non-Corrosive

Detects Micro Leaks down to 0.65 oz/year

WIDE COMPATIBILITY - Suitable for filling up the automobile air conditioning refrigeration system of R134A, R12, R22. Low Pressure coupler (inner diameter 13mm) to 1/4’’ SAE male and 8v1 female thread work on car AC systems and all home office AC.

LARGE CAPACITY - 2oz refillable oil injector 60ml capacity aluminum canister body, get the oil or fluorescent dye into the system, once shot may cure and save a sickened compressor caused by low oil.

PREMIUM QUALITY - A professional field service tool with aluminum alloy body, and brass connector on a piece of high-pressure hose 1/4" female connector, to ensure durable ans long lasting to use.

Upgraded 5 LED indicators reflect gas concentration.

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

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

Can be diluted for leak detection

Lubricates tire and rim for ease in mounting

Dries quickly

The Easiest Injection Method: No more fussing with messy syringes, hoses, or pressurized cans. The Leak Saver injects directly and easily into the system with a basic manifold gauge set or even easier with our Leak Shot Injection Kits. Note: for automotive systems, you will still need the standard 134A to 1/4” charging adapter. Mini-splits may require a 5/16” to 1/4” charging adapter.

More Than 3 Million Units Sold Since 2015: The Leak Saver can permanently seal small refrigerant leaks where the complete refrigerant charge is not lost within 72 hours. It’s similar to how blood in your body reacts to a cut. When a leak occurs, the Leak Saver reacts with the air and moisture at the leak site to permanently seal the leak. When used for preventative maintenance, the active ingredient circulates safely in the system to seal future leaks.

With Added UV Dye for Finding Large Leaks: Seal it or find it! If you have a leak that is simply too large for leak sealants to seal, the added UV Dye will light up brightly at the leak site when using a UV flashlight.

Traditional coronal sensor with upgraded low-energy CPU, more stable and fast triggers on R11, R22, R134A, R404a, R410A and all halogenated refrigerants including HFCs, CFCs,HCFCs and blends.

Response in 3 seconds; Warm up in 6 seconds.

7 adjustable sensitivities with the max sensitivity of 0.11oz/yr.

【PROFESSIONAL MECHANIC OBD2 SCANNER】This V317 savior car scanner adopts the latest version of the intelligent chip in 2022 and will lead the market trend. This large color screen code reader integrates read/clear codes, live data stream, oxygen sensor test, battery voltage test, I/M readiness, vehicle info, freeze frame, EVAP test(fuel evaporation system), support 8 languages, DTC lib, and other powerful functions.

【UNMATCHED OBDII DIAGNOSTICS】The V317 code scanner has the O2 Sensor and EVAP system test which is a significant feature. the V317 OBD2 scan tool activates the leak test vehicle's EVAP system by monitoring the integrity of the fuel tank system. And O2 sensor testing is used to monitor and adjust the air/fuel mixture, which can determine to troubleshoot related to fuel efficiency and vehicle emissions. Also, I/M readiness, freeze frame, 3000 DTC lib are all very important features.

【DATA ACCURACY AND SECURITY COME FIRST】V317 car diagnostic scanner combines graphical and text-based real-time data to help you check the health of your car data in a more visual and precise way. With a 2.5-foot cable with thick, flexible insulation for improved safety, the V317 Car Diagnostic Scan Tool keeps you safe.

【Pass SAE-2791/ SAE-2913 standards, A2L compatible Refrigerant Leak Detector】Sensitivity Down to 0.1oz./year (3g/year). Instantly responding to all halogenated gases (including chlorine, fluorine, bromine): R290, R600a etc.][CFCs: R12, R11, R500 etc.] [HCFCs: R22, R123, R124 etc.] [HFCs: R32, R134a, R404a, R125 etc.] [HFOs: R454B, R1234YF etc.] [ Blends: AZ-50, HP62, R410a etc.]

【Infrared Absorption Spectroscopy, Anti-Interference Specifically for Automotive/ AC Maintenance】10-Year Sensor Life, 8-Hours continuous working after a charge, Efficiently putting an end to false trigger against cooling liquid, carb cleaner, transmission oil, engine oil, motor vehicle brake fluid etc. with a Large LCD Screen, new color graphic display, seen in bright sunlight or low light. Easily find leak dye with “Clip-On” UV LED at a glance.

【PEAK Function】 Record the Max. level of leaks. Mute the beep if you’re annoyed about it. High/ Medium/ Low of sensitivity to reach the best detection. Excellent sensitivity down to 0.14 oz/ year. 20 inch Stainless Steel Expansion Pipe Additionally with an Extended 12 inch.

High-precision Heated Diode Sensor: It triggers on R11/R22/R404a/R410a/R600a/R1234yf and all halogenated refrigerants including CFCs, HFCs, HCFCs, HCs, HFOs and blends.

4 Simple Buttons: It allows to fast reset, mute, power on/off, adjust sensitivity and makes LED screen visually display the leakage level and device status.

Fast Response: Warms up in the 30s and respond in 3s; 6-grade adjustable sensitivity with maximum sensitivity 0.11oz/yr.

[PREMIUM QUALITY] The oil injector made of high quality aluminum alloy. 100% tested before shipping.

[USAGE] This ac dye injector makes oil injecting into R12,R22,R134a ,2oz, Use injector to add 2 oz. of oil to a R-12 air conditioning system under pressure or during service.

[SIZE] Connections: 1/4" SAE Male x 1/4" SAE Female, 600PSI-3000PSI. This tool help you to add leak detector add oil in ac compressor. This tool is fantastic for injecting oil or dye into car ac systems without having to use any extra refrigerant.

✔ HIGH PERFORMANCE - The SMK-1 version 2.0 outputs lots of smoke! It's compact, powerful, and all quality components have been UPGRADED+ in version 2.0. All units come with our brand new ALP HIGH YIELD Ceramic Smoke System guaranteed to produce more smoke than all competition and last forever (smoke coil has our lifetime warranty).

✔ DIAGNOSE ALL TYPES OF LEAKS - Consistently smoke test EVAP / Vacuum / exhaust / and more at a fraction of the cost.

✔ PRECISE AND SAFE - Engineered and tested 100% safe for all vehicles & GUARANTEED TO WORK! High Smoke output detects micro leaks down to .001 inches.

【Certificated by SAE-J1627 and EN14624 Standards】Stop false alarms from soap bubbles solution. CLD-100 【With UV + White flashlight】, an advanced version of WJL-6000. Continuous detection mode, instantly responding to all halogenated gases (including chlorine, fluorine, bromine): [CFCs: R12, R11, R500, R503 etc.] [HCFCs: R22, R123, R124, R502 etc.] [HFCs: R134a, R1234yf, R404a, R125, R438a etc.] [HFOs: R1234 etc.] [Hydrocarbon: R290, R600a etc.] [ Blends: AZ-50, HP62, MP39, R410a etc.]

【6 Modes of Sensitivity to Reach the Best Detection】20cm flexible sensing tip with max.sensitivity of 0.21oz/yr(6gr/yr). You can manipulate the probe into the way you want to go. It's powered by 4 AAA batteries with low Battery Warning.

【The Less Warm-up Time】Warm-up time < 6s. Reset time: 2~10s. Reset function sets itself to ignore the ambient level of Halogen gas.

Upgraded Leak Detector: Upgraded circuit, low-consumption, compact size, easy to hold and carry.

Fast Response: With auto calibration, it warms up in 6s and responds in 3s when leakage detected and flashes leakage level indicator light.

Adjustable Sensitivity: 7 Grade sensitivity with maximum sensitivity of 0.11oz/yr., suitable for all kinds of leak detections.

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

Superior sensor with higher sensitivity and longer life. Response within 3 seconds; Warm up in 6 seconds. Internal high precision and stabilivolt IC, ultra-low power consumption, more stable operation, longer battery life.

Adjust sensitivity anytime to reach the best detection status automatically, 7 Adjustable Sensitivity; Maximum sensitivity is 0.21oz/yr (6g/yr). Automatic calibration, applied to harsh environments.

【Two-Color LED Light】The Freon tester 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)

【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), It can continuously work for 50 hours with 4*AAA batteries power supplied.

WIDELY USED：The halogen refrigerants leak detector detects all kinds of including but not limited to HVAC R22 R410A R134A CFCs HCFCs HFCs.It can be used for almost all air-conditioning refrigeration, including car and household air-conditioning and equipment refrigeration.

USEFUL：Real time sensitivity, refrigerant leak detector can be automatically adjusted to the best optimum detecting state. Flexible probe can reach to almost any awkward corners or space. More stable gas leak detector with precise ultra-low power IC design.

SPECIFICATION：The working temperatureis 0 °C ~ 52 °C(30°F to 125°F), Maximum sensitivity is 6gr/yr(halogen refrigerants).About the size :Fixed probe length: 20cm (7.87 inches),Product size :22.9 cm x 6.5 cm x 6.5 cm (9.01 x 2.56 x 2.56 inches).Electricity source need 6v DC, 4 x AAA batteries(not include).

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. 

7 Adjustable Sensitivity; Maximum sensitivity is 0.21oz/yr. Response within 3 seconds; Warm up in 6 seconds.

Audible and visual gas leakage indicators and Dual-color visual display of battery voltage

1.【2oz Large-Capacity】The capacity of the ac oil injector is 2oz (60ml). The AC oil injector has good sealing performance, fast filling speed, and no liquid leakage during use. The a/c oil injector tool can easily and accurately complete high-quality work.

2.【Aluminum Alloy Body】The a/c dye injector kit is a professional service tool with an aluminum alloy body. Suitable for filling up the automobile air conditioning refrigeration system of R134A, R12, R22. Filling pipe for pure liquid refrigerating oil. The hose pressure is 600-3000PSI.

3.【R134a Quick Connector】The low-pressure coupler in the a/c dye injector kit, with an inner diameter of 13mm. The low R134a AC quick connector adapter adopts a solid brass metal structure, which is rust-proof, corrosion-resistant, strong sealing, quick and easy to connect/disconnect, and has an exquisite and non-slip knurled grip ring design.

Concentrated

No Pump Down

For use in heat pumps, split and mini split systems, packaged units, and micro-channel coils

Heated Diode Refrigerant Leak Detector

Sensitivity better than 0.03 oz/yr (1g/a)

Bright, LCD screen with easy-to-see bar graphs and numeric readings

1 oz. of leak detection dye

Used to identify leaks in R-1234yf A/C systems

UV dye glows when under ultra-violet light for easy to identify leaks (UV flashlight sold separately)

🔬 ACCURATE: Professional and Accurate OXYGEN (O2) gas detector, 0-30.0% with 0.1% resolution. USA NIST Calibration.

🌷 DETECT: Electrochemical cell sensor with accuracy: ≤±5% F.S. and response time: T<30s. Zero and span calibration options. Comes factory calibrated.

🎆 ALARMS: Adjustable audio, visual, and vibration alarms alert when preset levels are reached. Alarm digital time stamp and logging.

The Ultrasonic Leak Detector can quick and simple location ultrasonic caused by air, liquid, dust leak. It’s able to detect leakage on tyre and also detects ultrasound as well. Use ergonomics, it is easy and fast for user to use with simple key operation mode and comfortable hand feeling.

The Air Leak Detector is a very useful device to locate leak either under pressure or vacuum. The head phone produced a very distinct sound on the area where the leak is coming from. Using the transmitter, it will transmit sound from an enclosed area and can pinpoint the gaps or opening on the roof using the receiver.

The Ultrasonic Leak Finder can detect the air or liquid leakage by detecting ultrasonic caused by high pressor leakage.It can trace the detector around outside of the screen, windows and door seals to locate the leak. It uses the advanced ultrasonic sensing technique and features small size, light weight, reliable detection, easy use and utility.

DIGITAL SIGNAL MICRO-PROCESSOR provides precise and instant responses

SENSITIVITY LEVEL ADJUSTMENT with 6 levels of sensitivity and 15 levels of detection

STATE OF THE ART FEATURES including visual leak level indicator, keypad control, mute and reset function

[Ideal A/C Maintaining Tool] a/c manifold gauge adopts the most advanced digital circuit and the high precision pressure sensor(Accuracy: 0.5%). Widely used Automotive Air Conditioner, Household Air Conditioner, Refrigerating Chamber and Refrigeration Plant. Real-time test of pressure got relative temperature which can help you more convenient for refrigeration system installation or servicing.

[Three Working Modes] R410a manifold gauge set comes with three common working modes: refrigerant pressure mode, vacuum percentage mode, leak detection mode. Equipped with real-time vacuum pressure test and percent indicate. Test range: 0 KPa~6000 KPa. Operating temp: -20℃~60℃（-4℉-140℉) . But the manifold gauge cannot measure micron.

[Built in 90 Refrigerants] ac diagnostic manifold gauge set built-in 90 refrigerants and corresponding temperatures sheet data according to the US NIST standard.(R11 R13 R113 R114 R115 R116 R12 R123 R124 R125 R1270 R134A R14 R141B R142B R143A R152A R170 R21 R218 R22 R410A etc.)

[High-quality Vacuum Pump] Our vacuum pump is designed to have high efficiency and low noise for maintaining air conditioning systems. The aluminum housing makes the pump light-weight and durable, the thermally protected motor is applicable for long-term operation.

[Multi-functional Manifold Gauge] Our manifold gauge is designed to measure the pressure of the equipment accurately and repair air conditioning systems. The good-quality gauge improves the reading accuracy largely. It is suitable for R12 R22 R134A R502. It is designed with collision prevention and shock absorption.

[Durable Leak Detector] Our leak detector is applicable to all the different refrigerants, and it has the same sensitivity on all the refrigerants. The detection results are not affected by smoke, air flow or temperature change.

For factory installed and retrofitted R-134a automotive air conditioning systems

Contains single application of UV leak detection dye

Professional grade

3-in-1 A/C leak detector tool kit helps to check out automotive air conditioner freon leak locations. Inlcude 1x freon leak tester (4*AAA batteries NOT INCLUDE), 1x UV Flashlight (6*AA batteries NOT INCLUDE), 1x UV protective glasses.

Freon Leak Detector (1) - Professional freon leak detector triggers on R410A R134A R1234YF R12 R22 R502 and all chlorinated refrigerants including HFCs, CFCs,HCFCs and blends.

Freon Leak Detector (2) - Equipped with flexible probe around 7.9-inch allows detections in difficult and hard-to-reach areas. Fast response within 3 seconds and warm up in 6 seconds. Upgarde 7 sensitivity level with 0.21oz/yr. max sensitivity.

Hand Pump Leak Detector: The radiator pressure test tool uses aluminum pump cylinder rather than plastic one, 21.2" rubber nylon resin hoses, brass fittings, solid and durable. 3" large dial gauge with index range 0 to 35psi (0 to 2.5bar), easy to observe. Chrome plated brass quick coupler with relief valve, can be connected to radiator adapters easily and quickly.

Leak Detection Tool: The hand pump leak detection tool pressurize on the reservoir, and watch for pointer drop over time to confirm system leak down. If there is any crack in the cooling system, the water in the tank will leak out under pressure, shows the fracture position, such as the tank, hose, a loose connection, etc. Check regularly, repair promptly, avoid leak result in the reduction of coolant and boiling point, cause high engine temperature, low oil viscosity and other serious problem

Easy To Use: Remove the original radiator cap, choose an available radiator cap from the test kit and install it on radiator opening. Work the handpump till the pressure up to 10-15psi (Avoid up to 35psi). Check the gauge reading, if the reading drops automatically, it means that the leakage might occur in radiator. Please inspect the radiator system and repair it if necessary. Normally, it takes around 10mins to test leak, very easy and fast to operate.

Sensitivity of 0.15 oz./year (4 g/year)

Detects all CFCs, HCFCs, HFCs, and HFOs

Proven heated diode sensor for reliable leak checking