10 Best Refrigerant Leak Detector of December 2025

• 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

• Refigerant leak detector and portable monitor
• Cloud hunter and pinpoint modes is like having two leak detectors in one
• All new, redesigned infrared sensor.
• Longest sensor life in the industry
• Detects all CFCs, HCFCs, HFCs, HFOs and CO2* (*Requires CO2 sensor, sold separately)
• Completley field replaceable (Sensor, battery, filter, probe)
• New lithium Ion Battery
• Automatic and manual zero modes
• Sensativity of 0.03 oz./year (1 g/year) will not degrade over time

Inficon

• The Freon leak detector detects all kinds of halogen refrigerants including but not limited to R11, R12, R500, R503, R22, R123, R124, R502, R125, R134a, R404a R600a R290;
• Sensitivity adjusted at any time and the halogen leak detector can be adjusted automatically to the best state of detecting;
• Inner precise IC with ultra-low power consumption circuit design, more stable, longer battery life; Dual-color visual display of battery voltage;
• Excellent sensor, high sensitivity, long lifetime. Powered by: 4 x AAA 1.5 V batteries (batteries not included in the package).
• We offer 100% satisfaction guarantee and one year warranty

Simbow

• 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.
• Response in 3 seconds; Warm up in 6 seconds.
• 6 Adjustable Sensitivity with max. sensitivity of 0.21oz/yr.
• Direct status indication with audible & visual leakage alarm indicators and dual colour battery indicators.
• Meets EN14624 and SAE-1627 Standards, 24/7 US Technician Support via Email and Phone.

Elitech

• 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

• Patented 3 LED UV lights with 395-415 nm wave length is optimum for a/c dye fluorescence
• Sweep mode function to pinpoint leak source with automatic calibration and reset to ambient
• UV wave-length: 395-415 nanometers
• Unique 120 x 160 full color graphic LCD screen with user friendly message and error screens
• 3 adjustable sensitivity levels, and 17 inches probe length
• Fit type: Universal Fit

Robinair

• With the latest and most innovated infrared sensor, its sensor life extends enormously for a maximum of 10 years. It triggers on all halogenated refrigerants much more precisely than traditional corona sensor and moderate heat-diode sensors.
• 3 Selectable Sensitivity Levels -High/Medium/Low; With a maximum sensitivity up to 0.14oz/yr.
• The world's first TFT screen advanced leak detector animates leakage, sensitivity, battery levels and sensor faulty indicators and presents more clear and easy readings.
• Pressing PEAK button to mark the maximum leakage value during measurements.
• Responds to all kinds of halogenated refrigerants and meets EN14624,SAE-162,SAE-2791 and SAE-2913 standards.【Free return or exchange within 3 months!】 24/7 US Technician Support via Email and Phone.

Elitech

• 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

• 【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