10 Best hvac leak detectors of 2025

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1

Fieldpiece
Fieldpiece - DR82 Infrared Refrigerant Leak Detector - Ultra-Sensitive Leak Sniffer with Large, Backlite LCD Screen - Lightweight HVAC Tool
Main highlights

Advanced Infrared Sensor
State-of-the-art sensor detects HFC, CFC, HCFC, HFO, and blends.

Ideal for R410A Detection
Perfect for professionals dealing with R410A refrigerant leaks.

Customer Praised Sensitivity
Highly sensitive, detects micro leaks saving time and money.
Key specs
- Sensitivity:Better than 0.03 oz/yr
- Alarm:Visual
- Power:Battery Powered
- Size:N/A
- Voltage:N/A
9.9

Exceptional

Our Rating

9.1
Precision

9.1
Simple to use

8.7
worth the money
How do we rank?

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Real users impact

Thousands of users trust our site daily

Based on millions of stores and reviews

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Analyzing top stores
Value for Money

2

Fieldpiece
Fieldpiece - DR58 Heated Diode Refrigerant Leak Detector - Ultra-Sensitive Leak Sniffer with Large, Backlite LCD Screen - Lightweight HVAC Tool
Main highlights

High Sensitivity Detection
Detects leaks as small as 0.03 oz/yr, ensuring precise identification of refrigerant leaks.

Ideal for HVAC Professionals
Perfect for HVAC technicians needing to quickly locate refrigerant leaks.

Praised for Quick Accuracy
Customers commend its speed and accuracy in finding leaks.
9.6

Exceptional

Our Rating

9.9
Precision

9.9
Simple to use

9.9
worth the money
3

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.
Key specs
- Sensitivity:N/A
- Alarm:N/A
- Power:N/A
- Size:ILD-200
- Voltage:Rechargeable Lithium Battery
9.4

Excellent

Our Rating
4

Elitech
Elitech HVAC Refrigerant Leak Detector 10 Yrs Infrared Sensor Life, Halogen Freon Sniffer, Air Conditioning Detection, Automotive Gas Finder, ILD-200
Main highlights

Key Features and Benefits
Offers superior anti-interference, fast response, and high sensitivity up to 0.14oz/yr. Detects all halogenated gases with a long service life.

Ideal Use Cases
Perfect for HVAC maintenance, refrigeration repair, and environmental monitoring, especially in detecting leaks in various refrigerants and mixed gases.

Customer Reviews Highlight
Users highly appreciate its accuracy, ease of use, and the large, clear 2.8-inch screen, making leak detection more efficient.
Key specs
- Size:1.5D x 3.3W x 7.9H
- Compatibility:Halogen refrigerants
- Color:Ild-200
- Voltage:N/A
- Number of Pieces:N/A
9.3

Excellent

Our Rating

9.9
Simple to use

9.7
Precision

9.5
worth the money
5

Elitech
Elitech HVAC Refrigerant Leak Detector Heated Diode Sensor Halogen Freon Sniffer, Air Conditioning Detection, R22 R410A R134A R1234YF CFCs HCFCs HFCs, ILD-100H
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.
9.1

Excellent

Our Rating

9.7
Precision

9.5
Simple to use

9.3
Battery Duration
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6

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.
9.0

Excellent

Our Rating

8.9
Simple to use

8.4
worth the money

8.0
Precision
7

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

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8.9

Very Good

Our Rating
8

Inficon
Inficon Inficon Refrigerant Leak Detector, Model:705-202-G1
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
- Alarm:No false alarms
- Power:Battery Powered
- Size:N/A
- Voltage:N/A
8.6

Very Good

Our Rating

9.1
Simple to use

8.2
Precision

8.0
worth the money
9

Elitech
Elitech Refrigerant Leak Detector, CLD-100 Freon Leak Detector Car HVAC Halogen Refrigerant Leak Detector CFCs HCFCs HFCs
Main highlights

Versatile Detection
Upgraded corona sensor detects all halogenated refrigerants quickly.

Ideal for HVAC and Automotive
Perfect for finding leaks in HVAC systems and vehicles.

User-Friendly Operation
Customers praise ease of use and fast leak detection.
Key specs
- Sensitivity:N/A
- Alarm:N/A
- Power:N/A
- Size:2.5 x 2.5 x 9 inches
- Voltage:Battery by 4 AAA
8.5

Good

Our Rating
10

Rectorseal

Rectorseal 65554 8-Ounce Bottle Better Bubble Leak Locator, Blue
8.4

Good

Our Rating

10 Best hvac leak detectors of 2025

1

Fieldpiece - DR82 Infrared Refrigerant Leak Detector - Ultra-Sensitive Leak Sniffer with Large, Backlite LCD Screen - Lightweight HVAC Tool

9.1

9.1

8.7

How do we rank?

How do we rank?

Analyzing top stores

2

Fieldpiece - DR58 Heated Diode Refrigerant Leak Detector - Ultra-Sensitive Leak Sniffer with Large, Backlite LCD Screen - Lightweight HVAC Tool

9.9

9.9

9.9

3

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

4

Elitech HVAC Refrigerant Leak Detector 10 Yrs Infrared Sensor Life, Halogen Freon Sniffer, Air Conditioning Detection, Automotive Gas Finder, ILD-200

9.9

9.7

9.5

5

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

6

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

7

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

8

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

9.1

8.2

8.0

9

Elitech Refrigerant Leak Detector, CLD-100 Freon Leak Detector Car HVAC Halogen Refrigerant Leak Detector CFCs HCFCs HFCs

10

Rectorseal 65554 8-Ounce Bottle Better Bubble Leak Locator, Blue

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