HVAC Shop Blog

Confused about heated diode vs infrared leak detector technology? This guide explains how each sensor works, compares sensitivity, false alarm resistance, and sensor lifespan side by side, and tells you which technology suits residential splits, commercial HVAC, and refrigeration work in Australia.

A leak detector is only as good as its maintenance. In Australian HVAC work, a poorly stored, dirty, or ageing detector can lead to missed leaks, false alarms, wasted labour, and repeat visits. This guide explains leak detector calibration, sensor life, servicing, storage, and replacement in simple practical terms for techs working with R32, R410A, and R22 systems across Aussie conditions.

If you’ve ever had a callback for the same refrigerant leak, you already know the problem is not always the detector. Most of the time, it comes down to technique. In Australian HVAC work, especially with R32, R410A, and older R22 systems, proper leak detection means good prep, safe handling, steady scanning, and clear confirmation. This guide explains how to use a leak detector HVAC method step by step, avoid false alarms, check common leak points, and document the repair properly so you can find the fault the first time and avoid wasted labour.