Refrigerant leakage is a "silent killer" lurking inside air conditioning and refrigeration systems. It erodes equipment efficiency and drives up operating costs — and it can even cross the red line of environmental regulations. Precise, standardized leak detection has therefore become an essential survival skill for anyone in the industry.

Faced with the industry-wide challenge of detecting "micro leaks" of refrigerants such as R134a, Hirays leverages the HQ-300 Refrigerant Leak Detector and the HM-500 Multi-Gas Leak Detector to build a precise, efficient leak detection solution for household air conditioners, freezers, automotive AC systems, refrigerators, refrigerated trucks, and other refrigeration equipment — reinforcing the sealing defense line across the entire lifecycle, from production to operation and maintenance.

1. Why Is Refrigerant Leak Detection So Critical?

Compliance Risk

Regulations worldwide are tightening tolerance for refrigerant leaks. For instance, the EU F-Gas Regulation sets upper limits on leakage rates for certain equipment, and violations carry the risk of hefty fines and market exclusion.

The Safety Bottom Line

A3-class refrigerants such as R290 (propane) can form an explosive atmosphere in confined spaces if leaked; A2L-class gases such as R32 also present flammability risks. Safety is no longer just a technical standard — it is a legal and ethical red line.

Hidden Costs

Refrigerant leakage reduces equipment efficiency and quietly inflates energy costs, while after-sales repairs push up operation and maintenance expenses.

Brand Reputation

As air conditioners, supermarket freezers, and automotive AC units enter their peak shipping season, the cost of a leaking product reaching the market is multiplied many times over — directly damaging brand reputation and market trust.

2. What's Wrong with Conventional Detection?

Traditional detection methods face significant bottlenecks in precision, efficiency, and stability:

• Insufficient precision: Micro leaks are hard to identify, allowing units to "ship sick" and sowing the seeds of quality problems.

• Lagging test takt: Manual procedures are cumbersome, with no MES integration — unable to match the pace of modern production lines or future line expansion.

• Human-dependent results: Heavily influenced by operator experience and condition, resulting in poor stability and frequent missed detections and false calls.

3. The Hirays Refrigerant Leak Detection Solution

To address different production scenarios and precision requirements, Hirays offers a two-tier solution — "Standard Efficiency" and "High-End Precision" — achieving a better balance between cost and performance.

HQ-300 Refrigerant Leak Detector

The All-Round Guardian of Line Efficiency

• High sensitivity: Purpose-built for detecting leaks of common refrigerants such as R134a, with detection down to 0.3 g/a, ensuring micro leaks are caught before products leave the factory. The test takt matches high-speed lines, never slowing down throughput.

• Lightweight and easy to use: A handheld, lightweight design; the unique flexible probe bends to reach into narrow internal gaps; a 7-inch touchscreen makes operation intuitive. Suitable for production lines, after-sales service, and more.

• Broad application: Fully compatible with household air conditioners, refrigerators and freezers, commercial refrigeration equipment, and automotive AC production lines, meeting routine leak detection needs.

HM-500 Multi-Gas Leak Detector

The Precision Radar for High-End Manufacturing

• Multi-gas compatibility: Based on quadrupole mass spectrometry, it directly detects R134a, R600a, and other refrigerants, and supports user-defined target substances — easily handling diverse refrigerant detection requirements.

• Reliable results: Minimum detectable leak rate as low as 0.05 g/a, with a relative standard deviation (RSD) of just 3.8% across continuous testing (compared with 4.5% for a leading international brand), ensuring consistency and reliability in batch inspection, strictly guarding outgoing quality and protecting brand reputation.

• Smart and efficient: Startup time of approximately 3 minutes, perfectly matched to high-speed production lines. Full data traceability makes it ideal not only for home appliance manufacturing but also for new-energy vehicle air conditioning, high-end refrigeration equipment, and intelligent temperature control systems where yield is critical.

4. Full-Process Quality Assurance

The Hirays solution goes beyond a single inspection step to deliver end-to-end quality assurance for refrigeration equipment:

• Component-level precision testing: For critical components such as compressors, condensers, heat sinks, pipeline weld points, valve joints, motor cavities, and control boxes, Hirays provides multiple methods — helium mass spectrometry leak detection (highest precision), hydrogen-nitrogen mixture leak detection (cost-effective), and differential/direct pressure air tightness testing — to pinpoint micro leaks with accuracy.

⬆ Hydrogen-nitrogen leak test case: condenser tubing of a car refrigerator

⬆ Hydrogen-nitrogen leak test case: automotive air conditioner

• Whole-unit system validation: After final assembly, complete-unit sealing verification ensures no leak risk once components are integrated, avoiding later disassembly and rework.

• Digital quality control: Equipment fully supports MES integration, with automatic upload of test data and generation of visual quality reports — helping enterprises build a digital quality fortress that is traceable, analyzable, and optimizable.

5. Our Service Commitment: Making Detection Simpler

We understand that great equipment needs professional implementation support. Hirays provides:

Expert Selection

Based on your line takt, precision requirements, refrigerant type, and budget, we recommend the optimal equipment combination — avoiding both under-specification and wasted resources.

Equipment Trials

On-site testing with demo units is supported, so you can verify performance in your real production environment and ensure seamless integration with existing lines.

End-to-End Service

From installation and commissioning, operator training, and maintenance to technical upgrades, we provide professional support throughout the equipment lifecycle, keeping your team operating at peak efficiency.

Conclusion

Choosing Hirays means choosing more than a leak detector — it means choosing a partner with years of deep expertise in sealing inspection.

If you have refrigerant leak detection needs, feel free to contact us at any time. We will arrange for our technical specialists to work with you directly, providing targeted solutions and equipment trial opportunities, so we can jointly reinforce the sealing safety line for refrigeration equipment.