HVAC Shop Blog

R32 is now the standard refrigerant across most Aussie HVAC-R installs — but its A2L classification means your vacuum pump needs to be spark-free, not just capable. This guide covers why standard brush-motor pumps are a safety risk on R32 systems, how spark-free brushless DC technology works, and what's actually different about evacuating an R32 system versus R22

Moisture is the quiet cause of many call-backs. This guide shows how a Testo vacuum gauge gives you real micron proof, so you stop guessing and start confirming dryness, stability, and leak behaviour. You’ll see the full Testo vacuum range in Australia, how to choose between the 552 and 552i, and the simple rise-test habits that protect your labour on Brisbane, Sydney, Melbourne, Perth, and Darwin jobs.