Best Freon Leak Detector for Refrigeration (2024 update)

Freon Gas Leak Detector, Refrigerant Gas Leak Detector -

Best Freon Leak Detector for Refrigeration (2024 update)



✅ High Sensitivity: Advanced refrigerant sensors for precise detection of small Freon leaks.

✅ Freon Compatibility: Suitable for various Freon types like R-22, R-134a, R-410a.

✅ Easy : User-friendly with visual and audio alerts for leak identification.

 Design: Built for longevity and reliability in various environments.

⛔ Calibration: Some models require periodic calibration for accuracy.

⛔  Miss Small Leaks: May not detect very small Freon leaks.

⛔ False Alarms: Environmental factors can lead to incorrect alerts.

⛔ Complex for New Users: Can be challenging for beginners to operate.

⛔ Expensive: High-quality models come with a significant cost.

Best Freon Leak Detectors

What is a Refrigerant Leak Detector?

A freon leak detector is a specialized tool used to identify leaks of freon, a common refrigerant in air conditioning and refrigeration systems. It senses the presence of freon gases, helping technicians locate and repair leaks to maintain system efficiency and environmental safety.

Our Rankings and Methodology

Forensics Detectors designs, manufacturers and tests gas detctors. We are the experts when it comes to gas detection. So when choosing a freon leak detector or refrigerant leak detector we know exactly what you should look for (in fact we are developing our own Freon Leak Detector).

That means we have spent countless hours researching and testing various models to identify the best options on the market. 

Below you'll find our top picks for freon leak detectors, each offering unique features and benefits to suit your specific needs. 


Freon was once hailed as a revolutionary and safe replacement for toxic refrigerants like ammonia. However, it was later discovered that Freon significantly contributes to ozone depletion, leading to its phase-out under the Montreal Protocol in the late 20th century. 

Fieldpiece Refrigerant Leak Detector, DR58 

The Fieldpiece DR58 Heated Diode Refrigerant Leak Detector is a highly capable and robust tool for detecting refrigerant leaks, suitable for professional use in various environments. This is not cheap rubbish low cost version. This is the real deal. 


  1. High Sensitivity: The DR58 is noted for its high sensitivity, capable of detecting leaks better than 0.03 oz/yr. This makes it highly effective in identifying even minor refrigerant leaks.
  2. Versatile Detection Capability: It is capable of detecting all types of refrigerants including HFC, CFC, HCFC, HFO, and their blends, making it a versatile tool for different applications.
  3. Durable Design: The detector is designed to be compact and rugged. It has an impact-resistant IP54-certified body, suggesting it can withstand rough handling and various environmental conditions.
  4. Long Battery Life: Equipped with an 18-hour USB rechargeable lithium-ion battery. Plenty of juice.


  1. Cost: High-quality, specialized tools like the Fieldpiece DR58 might come at a higher price point, which could be a consideration for budget-conscious users (inferred con).
  2. Complexity for Novices: The advanced features and sensitivity might require a learning curve, particularly for those who are new to using such specialized equipment (inferred con).

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

The Inficon TEK-Mate 705-202-G1 Refrigerant Leak Detector is a widely used tool for detecting refrigerant leaks, favored by many HVAC/R technicians for its features and performance. It is a dependable and cost-effective option for refrigerant leak detection, with good sensitivity and versatility for various refrigerants. 


  1. Good Sensitivity: It offers a sensitivity of 0.25 oz/year, which is suitable for detecting most refrigerant leaks, including all types of CFCs, HCFCs, HFCs, and HFOs.
  2. Wide Range of Detectable Refrigerants: It can detect a variety of refrigerants like R22, R134a, R404a, R410a, and others, making it versatile for different HVAC systems.
  3. User-Friendly Features: It includes a heated diode sensor, variable intensity audible and visual alarms, and automatic compensation for changing background refrigerant concentrations, enhancing its usability​.


  1. Sensitivity Concerns: Some users have reported that the detector is not very sensitive compared to other models, which might be a limitation in detecting very small leaks​.
  2. Physical Bulkiness: There are mentions of the detector feeling large and clunky, which might affect ease of use, especially in tight spaces​.

Elitech ILD-200 Advanced Refrigerant Infrared Leak Detector

The Elitech ILD-200 Advanced Refrigerant Leak Detector offers several advantages and some potential drawbacks. The Elitech ILD-200 is a highly sensitive and versatile leak detector that offers good value for its price. However, it requires careful handling to avoid water damage and ensure accurate detection of leaks.


  1. High Sensitivity: The Elitech ILD-200 boasts high sensitivity, capable of detecting leaks as low as 0.014 ounces per year, making it highly effective for finding even minor leaks​.
  2. Versatility in Leak Detection: It is effective in detecting a variety of refrigerants, including R410a, making it suitable for diverse HVAC and automotive repair needs​.
  3. User-Friendly Features: The device is equipped with an LCD screen and a mute button, which is useful in noise-sensitive environments. Its user-friendly interface makes it more appealing to HVAC technicians​.
  4. Durability and Quality: Rated highly for its durability and overall quality, it's considered a reliable tool for professional use​.
  5. Cost-Effective: The detector is available at a reasonable price point, offering good value for its features and capabilities​.


  1. Vulnerability to Water: The device can be sensitive to water exposure, which might limit its use in certain environments or under certain conditions.
  2. Potential for Missing Leaks: If used too quickly or not handled properly, there's a risk of missing smaller leaks, requiring careful operation​.


Klein Tools ET160 Refrigerant Gas Detector

The Klein Tools ET160 Refrigerant Gas Leak Detector is designed for detecting gas leaks in HVAC systems, providing several benefits and some potential limitations. It is easy of use, good sensitivity, and has versatility in detecting a wide range of refrigerants. 


  1. Ease of Use: The ET160 is noted for its user-friendly design, making it accessible for professionals and beginners alike​.
  2. Versatile Detection Capability: It can detect a wide range of refrigerant gases including CFCs, HFCs, HCFCs, and blends, which enhances its utility in various HVAC applications​.
  3. Sensitive Detection: The detector is capable of detecting as low as 100 ppm of common refrigerant gases, providing reliable sensitivity for leak detection tasks​.
  4. Helpful Features: It includes automatic zero-point calibration, a hold function, a mute option, and a low battery indicator, all of which contribute to a more efficient and user-friendly experience​.
  5. Portability and Design: The ET160 is lightweight and portable, coming with a storage pouch for easy transportation between job sites. Its design is suitable for HVAC professionals​.


  1. Detection Limitations: While it detects low levels of common refrigerants, there might be limitations in detecting very small or slow leaks, a common challenge with many leak detectors (inferred con).
  2. Durability and Longevity: The long-term durability and performance of the detector in various environmental conditions are not explicitly mentioned, which could be a factor to consider (inferred con).

klein freon leak detector

Robinair LD7 Premium Refrigerant Leak Detector

The Robinair LD7 Premium Refrigerant Leak Detector is nice refrigerant leak detector with a solid reputation in automotive repair. Pricey but a Cadillac version that has proven itself over the years.


  1. Innovative Display Technology: The LD7 features a new color graphic display that highlights leak sizes in two different ways. Its bar graph mode shows the amount of refrigerant detected in the air and changes colors as the sensor gets closer to the leak​.
  2. Enhanced Leak Detection Capabilities: It uses UV LED lights to locate leaks with UV dye and an inspection light, which is beneficial for searching in dark locations. 
  3. Durable and Convenient Packaging: The LD7 comes packaged in a solid carrying case, which is convenient for transportation and adds an element of durability to the product​.


  1. Potential Cost Implications: This unit is more expensive than other leak detectors. Again, it is known as the Cadillac of Freon Leak Detectors for a good reason.
  2. Complexity for New Folks: This is a advanced tool so new technicians may need some extra minute of training.

car freon leak detector

The Dr. Koz Freon Leak Detector Buying Guide

When looking for a freon leak detector or refrigerant leak detector, there are a few features to consider to ensure you choose the best product for your needs. Here are some factors to keep in mind:


The sensitivity of the leak detector is a critical factor to consider. A leak detector with high sensitivity will detect even the smallest leaks, making it easier to identify the source of the problem. Look for a product with a sensitivity level of at least 0.25 ounces per year.


Accuracy is another essential feature to consider. A reliable leak detector should be accurate in detecting leaks to prevent false alarms and unnecessary repairs. Look for a product with a low false-positive rate and a high accuracy rate.

Response Time

The response time of the leak detector is also an important factor to consider. A leak detector with a quick response time will help you identify the source of the leak faster, saving you time and money. Look for a product with a response time of less than 3 seconds.


Portability is also a factor to consider, especially if you need to move around with the leak detector. Look for a product that is lightweight and easy to carry around. A product with a long battery life will also be ideal.


Price is another factor to consider when choosing a leak detector. While it's important to choose a product that meets your needs, ensure you don't overspend. Look for a product that offers value for money and fits your budget.

In summary, when choosing a freon leak detector or refrigerant leak detector, consider the sensitivity, accuracy, response time, portability, and price. By keeping these factors in mind, you can choose a product that meets your needs and offers value for money.

Frequently Asked Questions

How do we choose the best refrigerant leak detector for our needs?

When choosing a refrigerant leak detector, it is important to consider factors such as the type of refrigerant being used, the size of the system, and the sensitivity of the detector. Electronic leak detectors are generally more sensitive than other types, but they can also be more expensive. It is important to choose a detector that is compatible with the refrigerant being used and that has a sensitivity level appropriate for the size of the system.

What are the pros and cons of using electronic leak detectors versus other types?

Electronic leak detectors are generally more sensitive than other types, making them better suited for detecting small leaks. They are also easier to use and can provide more accurate results. However, electronic leak detectors can be more expensive than other types, and they require regular calibration to maintain their accuracy.

Are there any reliable methods for detecting leaks in HVAC systems without professional equipment?

While professional equipment is generally more reliable, there are some methods that can be used to detect leaks in HVAC systems without professional equipment. One such method is the soap bubble test, which involves applying a soapy solution to the suspected leak area and looking for bubbles. However, this method is not as sensitive as professional equipment and may not detect small leaks.

Can refrigerant leak detectors be rented, and where would we find them?

Yes, refrigerant leak detectors can be rented from some equipment rental companies. It is important to choose a reputable company and to ensure that the detector is in good working condition before use.

What safety precautions should be taken when using a refrigerant leak detector?

When using a refrigerant leak detector, it is important to wear appropriate personal protective equipment, such as gloves and safety glasses. It is also important to ensure that the area is well-ventilated and to follow the manufacturer's instructions for use.

How accurate are refrigerant leak detectors, and can they detect small leaks?

Refrigerant leak detectors can be very accurate, with some models capable of detecting leaks as small as 0.1 ounces per year. However, the accuracy of the detector can be affected by factors such as the type of refrigerant being used and the size of the system. It is important to choose a detector with an appropriate sensitivity level for the size of the system being tested.

About the Author

Dr. Kos Galatsis ("Dr.Koz") is the President of FORENSICS DETECTORS, where the company operates from the scenic Palos Verdes Peninsula in Los Angeles, California. He is a subject matter expert on gas sensor technology, gas detectors, gas meters, and gas analyzers. He has been designing, building, manufacturing and testing toxic gas detection systems for over 20 years.

gas detector expert

Every day is a blessing for Dr. Koz. He loves to help customers solve their unique problems. Dr. Koz also loves spending time with his wife and his three children going to the beach, grilling burgers, and enjoying the outdoors.

Read more about Forensics Detectors here.

Phone: +1 424-341-3886