Collection: Refrigerant Leak Detectors | R32, A2L & HVAC Leak Tools

30 products

Refrigerant Leak Detectors Australia – R32, A2L & HVAC Leak Detection Tools

A refrigerant leak costs your customer money, damages the environment, and — with A2L refrigerants like R32 — creates a genuine safety risk. A quality electronic leak detector finds leaks fast, confirms repairs, and keeps you compliant. This collection covers heated-diode, infrared, and ultrasonic leak detectors suited to residential splits, commercial refrigeration, and automotive A/C work across Australia.

Types of Refrigerant Leak Detection System Options

Type How It Works Best For
Heated Diode Sensor reacts to halogen gases; alarm triggers on detection All-round HVAC/R use, CFC/HCFC/HFC/HFO
Infrared (NDIR) Optical sensor; longer sensor life, less false alarms High-use environments, contaminated areas
Ultrasonic Detects sound of gas escaping under pressure Pressurised systems, noisy environments

Key Features to Compare in an HVAC Leak Detector

  • Sensitivity (g/year) — lower is better; 5 g/year is the standard for HVAC compliance work
  • Refrigerant compatibility — confirm it detects R32, R410A, R134a, R404A, and HFOs as needed
  • A2L rating — essential if you work on R32 systems; the detector must be safe to use around mildly flammable refrigerants
  • Probe length and flexibility — a longer, flexible probe reaches tight spots behind coils and in confined spaces
  • Sensor life — heated diode sensors typically last ~100 hours; infrared sensors last significantly longer
  • Auto background compensation — adjusts for ambient refrigerant contamination to reduce false alarms

Pro Tips for Using an Aircon Gas Leak Detector

  • Move the probe slowly — 25–50mm per second — and keep it close to the surface without touching
  • Start at the lowest point of the system; refrigerant vapour is heavier than air and settles
  • If the alarm triggers, pull back, let the sensor reset in fresh air, then re-approach to pinpoint the exact location
  • Always leak-check after repairs before recharging — don’t assume the fix held
  • Before using electronic leak detectors on an empty system, perform a standing pressure test using nitrogen pressure regulators to find large leaks fast

Related Categories for Gas Leak Test Kit Tools


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