Hvac Shop Blog
Sydney High-Rise Guide: Evacuating Ducted Systems with Testo 557
Sydney HVAC pros — this guide shows how to evacuate ducted air conditioning systems using the Testo 557 manifold and vacuum probe. Learn how to connect via Bluetooth, pull a deep vacuum, and achieve accurate micron readings across multi-storey installations. Includes a comparison with Fieldpiece SM480V, ARCtick compliance details, and tradie-tested maintenance tips for high-rise work in Sydney, Parramatta, and Wollongong.