10 Best hvac leak detectors of 2025

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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
- Number of Pieces:N/A
- Size:N/A
9.9

Exceptional

Our Rating

9.1
Precision

9.1
Simple to use

8.7
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

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

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

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
9.3

Excellent

Our Rating
5

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
- Number of Pieces:1
- Size:ILD-200
9.1

Excellent

Our Rating
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6

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
- Alarm:No false alarms
- Power:Battery Powered
- Number of Pieces:N/A
- Size:N/A
8.8

Very Good

Our Rating

9.1
Simple to use

8.2
Precision

8.0
worth the money
7

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.
8.7

Very Good

Our Rating

8.9
Simple to use

8.4
worth the money

8.0
Precision
8

Rectorseal

Rectorseal 65554 8-Ounce Bottle Better Bubble Leak Locator, Blue
8.6

Very Good

Our Rating
9

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.
8.3

Good

Our Rating
10

Elitech
Elitech Refrigerant Leak Detector, Infrared & Heated Diode Sensors in 1 Unit, HVAC Halogen Gas Sniffer, Anti-interference, IR-200
Main highlights

Dual Sensor Accuracy
Comes with infrared and heated diode sensors for precise detection.

Versatile Use Cases
Ideal for automotive, HVAC, and industrial leak detection.

Praised Battery Life
Users love the long-lasting rechargeable battery for extended use.
Key specs
- Number of Pieces:Two sensors
- Size:1.4D x 2.8W x 7.9H
- Color:Infrared and Heated Diode
- Compatibility:All halogenated refrigerants
- Voltage:N/A
8.2

Good

Our Rating

9.9
clearly written

9.9
Simple to use

9.9
Precision

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

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

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

5

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

6

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

9.1

8.2

8.0

7

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

8

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

9

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

10

Elitech Refrigerant Leak Detector, Infrared & Heated Diode Sensors in 1 Unit, HVAC Halogen Gas Sniffer, Anti-interference, IR-200

9.9

9.9

9.9

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