10 Best Auto Ac Leak Detector of December 2025

• RECHARGEABLE TRUE UV LIGHT KIT includes AAA and rechargeable batteries, battery holder, 110V charger, refillable 2 oz dye injector, 2 oz concentrated universal A/C fluorescent dye (25 applications), 4 oz dye remover, 25 service information labels, and UV safety glasses
• UV WAVELENGTH of 390-400
• 154 – 170 µW/cm2 which is compatible to a 50 watt UV flashlight
• ALUMINUM BODY WITH ANODIZED FINISH makes this flashlight extremely durable
• ALL OF THE TOOLS NECESSARY for complete UV leak detection

MASTERCOOL

• Professional UV Leak Detector Kit
• 25 service information labels
• UV enhancing safety glasses

MASTERCOOL

• 【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 0.11oz/yr., suitable for all kinds of leak detections.
• 【Replaceable Battery】 2AA Batteries needed (not included in the package) to power on and equips with a tri-color indicator light to display battery level.
• 【Safe and Reliable】Meets EN14624 and SAE-1627 industrial standards, and responds to R11, R22, R134A, R404a, R410A and all halogenated refrigerants including HFCs, CFCs, HCFCs and blends. 24/7 US Technician Support via Email and Phone.

Elitech

• Robinair's Halogenated Refrigerant Leak Detector makes finding refrigerant leaks fast and easy
• Innovative Microprocessor Controlled Circuitry and Advanced Digital Signal Processing monitor the sensing tip up to 2K times/second
• Completely re-designed sensing tip - on a 14 inch long (35.5 cm) flexible stainless steel probe with liner - increases sensitivity, improves reliability, and lasts twice as long as it's predecessor
• Features: variable frequency audible alarm, constant power indication, cordless, battery powered operation on 2 C-cell batteries, and carrying case
• Certified to SAE J1627 standards with CE approval and UL classification

Robinair

• 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 Sensitivity with max. sensitivity of 0.11oz/yr.
• 14 inches flexible stainless steel probe with 3 extra sensing tips
• Modular sensor,convenient for maintenance.Powered by: 2 C Alkaline batteries(included). 24/7 US Technician Support via Email and Phone.

Elitech

• Sensitivity of 0.10 oz./year (3 g/year)
• Detects all CFCs, HCFCs, HFCs, and HFOs
• Field-replaceable infrared sensor lasts for 1,000 hours
• High performance filter prevents sensor contamination
• Automatic and manual zero modes
• Sensitivity will not degrade over time
• Rechargeable NiMH battery
• Rugged carrying case included
• Two-year replacement warranty
• Made in the United States, US Technician Support via Email and Phone

Inficon

• Automobile air conditioner leak detection set are complete, with 28 lamp bead flashlight, fluorescent agent, battery set, and fluorescent glasses.
• Rapid detection of leakage point and suitable for various air conditioning system leak detection.
• Functional principle: After evacuating, add enough fluorescent agent to the air-conditioning system to mix with the frozen oil. Then add snow. When a refrigerant leak occurs at the leak point, the fluorescent agent also leaks. When the blue light shines on the golden yellow phosphor, it will show a bright golden yellow.
• Reasons that no fluorescence is displayed, or the display is very faint: 1: No leakage in the system 2: Insufficient fluorescent agent.
• Made of high quality material, practical and durable.

Wakauto

• Triggers on all CFCs, HFCs, HCFCs and blends. More sensitive to some refrigerants than others.
• 15-hour rechargeable, user replaceable battery. It lasts almost two full workdays on a single charge (if your hunting down leaks all day). You can also use it while it's hooked up to the wall or vehicle charger.
• Filter system helps protect the sensor from moisture and other contaminants. The sensor is connected to the body at the other end of the snout. The filter is at the tip of the snout. If you accidentally hit some condensation or oil, the filter swells, shutting off the pull to the sensor and protecting it from failure.
• Manual or automatic zeroing. It auto zeros every two seconds until a leak triggers the sensor. After that you can manually zero the detector to help further pinpoint leaks.
• Up and running in 30 seconds. Some heated elements and corona discharge units take much more time to warm up. UV dyes can take several hours to travel through a running system and can degrade system components.

Fieldpiece

• The leak detector flashlight wide range of applications
• High accuracy
• Easy to use
• Long-term effective
• Pollution-free, environmentally friendly

Nikauto

• 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. 24/7 US Technician Support via Email and Phone.

Elitech