10 Best freon leak detectors of 2025

Save up to 25% off

Best Choice

1

Inficon
Inficon Inficon Refrigerant Leak Detector, Model:705-202-G1

25% Off
Main highlights

Reliable Leak Detection
Proven heated diode sensor ensures accurate detection of all CFCs, HCFCs, HFCs, and HFOs.

Versatile Use Cases
Ideal for HVAC technicians needing precise and reliable refrigerant leak detection.

Customer Praised Sensitivity
High and low sensitivity ranges make locating refrigerant leaks easier.
Key specs
- Sensitivity:0.25 oz./year 7 g/year
- Bulb:Heated Diode Sensor
- Alarm:No false alarms
- Exterior:Rugged carrying case
- Power:Battery Powered
9.7

Exceptional

Our Rating

9.1
Simple to use

8.2
Precision

8.0
worth the money
How do we rank?

Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you

Careful review Our team ensures quality, value, and fit based on real user feedback

Trusted insights AI and human analysis guide your decisions, reflecting real user priorities
Real users impact

Thousands of users trust our site daily

Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
Value for Money

2

TOPTES

TOPTES RT-389 Rechargeable Refrigerant Leak Detector, HVAC Freon Leak Detector with 3 Sensitivity Modes & 3 Alarm Types, Air Conditioning Detection for CFCs, HCFCs, HFCs, HFOs, HCs - Orange
9.6

Exceptional

Our Rating
3

Elitech
Elitech HVAC Refrigerant Leak Detector Heated Diode Sensor Halogen Freon Sniffer, Air Conditioning Detection, R22 R410A R134A R1234YF CFCs HCFCs HFCs, ILD-100H

21% Off
Main highlights

TFT_Screen_and_High_Sensitivity
The ILD300 features a TFT screen for clear readings and adjustable sensitivity up to 0.1oz/yr, making it highly accurate for detecting halogenated refrigerants.

Ideal_for_AC_and_Refrigeration_Repairs
Perfect for pinpointing leaks in AC units and refrigeration systems, especially useful for professionals needing accurate detection without false alarms.

Highly_Accurate_Leak_Detection
Customers frequently praise the ILD300 for its accuracy in detecting leaks, ease of use, and the advantage of having a TFT screen for clear readings.
9.4

Excellent

Our Rating

9.7
Precision

9.5
Simple to use

9.3
Battery Duration
4

SENSYX
SENSYX Rechargeable HVAC Refrigerant Leak Detector, Halogen Freon Sniffer, Air Conditioning Detection, Automotive Gas Finder (SFD201 Refrigerant&Combustible Gas Detector)
Main highlights

Rechargeable Lithium Battery Convenience
Enjoy cordless operation with a rechargeable battery and USB-C charging, enhancing mobility and prolonged use.

Versatile Leak Detection
Ideal for HVAC and automotive applications, detecting halogen refrigerants and combustible gases efficiently.

Highly Sensitive Sensor
Praised for its exceptional sensitivity and reliability in detecting gas leaks.
9.2

Excellent

Our Rating
5

Elitech
Elitech Freon Leak Detector Halogen Refrigerant Gas Leak Detector HVAC Tester AC Sniffer R22 R410A R134A 1234YF, WJL-6000S
Main highlights

Key Features
Detects all halogenated refrigerants with 7 adjustable sensitivity levels and quick response time. Features audible/visual indicators and a flexible probe.

Ideal Use Cases
Perfect for self-checking auto AC, air conditioning systems, and hard-to-reach areas. Essential for professionals in HVAC maintenance and repair.

Customer Praise
Highly praised for its accuracy, ease of use, and the fast response time, making it a reliable tool for leak detection tasks.
9.1

Excellent

Our Rating

8.9
Simple to use

8.4
worth the money

8.0
Precision
See Today’s Deals & Prices
6

Aprvtio

Refrigerant Leak Detector, Aprvtio WJL-6000PRO Combine PPM Freon & Combustible Gas Leak Detector with Loud Alarm, 1800mAh Rechargeable Battery for R134A R410A Propane Methane
9.0

Excellent

Our Rating
7

Aprvtio
HVAC Refrigerant Leak Detector, ALD-200 Freon Leak Detector, Rechargeable Freon Sniffer Halogen Combustible Gas Leak Detector 16-Inch Sensor Probes with Loud Alarm,for R134A R410A R22 R600A R454B
Main highlights

High Sensitivity and Accuracy
Detects leaks with maximum sensitivity of 0.14oz./yr, less interference.

Ideal for HVAC and Automotive
Perfect for detecting leaks in HVAC systems and automotive AC units.

Praised for Easy Use
Customers appreciate its ease of use and reliable performance.
8.7

Very Good

Our Rating
8

Wale&Morn

WJL-6000 Freon Leak Detector Halogen Gas Sniffer Refrigerant AC Leak Tester R22 R410A R134A R1234YF
8.6

Very Good

Our Rating
9

Aprvtio
Refrigerant Leak Detector with LED Light, Aprvtio WJL-6000PRO Halogen Leak Detector Freon Gas Leakage Tester HVAC Air Condition R22 R410A R134A R454B CFCs HCFCs HFCs Indicator Freon Sniffer
Main highlights

Key Features
Upgraded sensitivity to 0.14oz/yr, visual leakage level display, 50-hour battery life, and dual-color LED light for enhanced visibility.

Ideal Use Cases
Perfect for HVAC repair, automotive AC checks, and refrigeration maintenance, especially in dark, small, or hard-to-reach areas.

Customer Praise
Most reviews highlight its exceptional sensitivity and accuracy, durable design, and the helpful visual and audible leakage indicators as standout features.
Key specs
- Number of Pieces:1
- Size:11.85 x 3.58 x 1.93 inches
- Color:WJL-6000PRO-UV
- Compatibility:R22, R410A, R134A, R1234YF
- Voltage:N/A
8.5

Good

Our Rating

8.7
Simple to use

8.0
worth the money

8.0
Precision
10

REALHUNLEE

REALHUNLEE Air Conditioner UV Dye Leak Detector, Pro Auto Oil AC UV Dye Leak Test Detection Tool Kit 68 LED A/C UV Flashlight Detector with Protective Glasses
8.4

Good

Our Rating

9.7
Simple to use

9.3
Precision

9.1
worth the money

10 Best freon leak detectors of 2025

1

Inficon Inficon Refrigerant Leak Detector, Model:705-202-G1

9.1

8.2

8.0

How do we rank?

How do we rank?

Analyzing top stores

2

TOPTES RT-389 Rechargeable Refrigerant Leak Detector, HVAC Freon Leak Detector with 3 Sensitivity Modes & 3 Alarm Types, Air Conditioning Detection for CFCs, HCFCs, HFCs, HFOs, HCs - Orange

3

Elitech HVAC Refrigerant Leak Detector Heated Diode Sensor Halogen Freon Sniffer, Air Conditioning Detection, R22 R410A R134A R1234YF CFCs HCFCs HFCs, ILD-100H

9.7

9.5

9.3

4

SENSYX Rechargeable HVAC Refrigerant Leak Detector, Halogen Freon Sniffer, Air Conditioning Detection, Automotive Gas Finder (SFD201 Refrigerant&Combustible Gas Detector)

5

Elitech Freon Leak Detector Halogen Refrigerant Gas Leak Detector HVAC Tester AC Sniffer R22 R410A R134A 1234YF, WJL-6000S

8.9

8.4

8.0

6

Refrigerant Leak Detector, Aprvtio WJL-6000PRO Combine PPM Freon & Combustible Gas Leak Detector with Loud Alarm, 1800mAh Rechargeable Battery for R134A R410A Propane Methane

7

HVAC Refrigerant Leak Detector, ALD-200 Freon Leak Detector, Rechargeable Freon Sniffer Halogen Combustible Gas Leak Detector 16-Inch Sensor Probes with Loud Alarm,for R134A R410A R22 R600A R454B

8

WJL-6000 Freon Leak Detector Halogen Gas Sniffer Refrigerant AC Leak Tester R22 R410A R134A R1234YF

9

Refrigerant Leak Detector with LED Light, Aprvtio WJL-6000PRO Halogen Leak Detector Freon Gas Leakage Tester HVAC Air Condition R22 R410A R134A R454B CFCs HCFCs HFCs Indicator Freon Sniffer

8.7

8.0

8.0

10

REALHUNLEE Air Conditioner UV Dye Leak Detector, Pro Auto Oil AC UV Dye Leak Test Detection Tool Kit 68 LED A/C UV Flashlight Detector with Protective Glasses

9.7

9.3

9.1

Sign up and get exclusive special deals