HVAC Shop Blog

The Testo 558s kit gives Australian HVAC techs a connected workflow built around the 558s digital manifold, two 115i wireless clamp thermometers, and one 552i wireless vacuum probe. This guide explains what is included in each bundle, how the hose-included version differs, how the kit works on real commercial jobs, and whether the full 558s package is worth the investment.

Comparing the Testo 558s vs 570s comes down to how you work in the field. This guide explains the real difference between Testo’s premium workflow-focused 558s and the data-heavy 570s, so Australian HVAC techs can choose the right smart manifold for commercial diagnostics, logging, reporting, and day-to-day service work.

Comparing the Testo 558s vs 557s comes down to workflow, job type, and how much on-device help you want. This guide explains where the 557s still makes strong sense for residential and light commercial work, where the 558s steps ahead for commercial diagnostics, and how to choose the right Testo smart manifold for Australian HVAC jobs.

Testo 557 is the digital manifold Aussie techs trust when they’re done guessing. It gives you stable pressure readings, fast superheat and subcooling calculations, and a workflow that feels calm on real jobs. Whether you’re dealing with Brisbane humidity, Sydney coastal salt, Melbourne cold snaps, Darwin tropics, or Perth heat, the 557 helps you diagnose faster and prove your results. In this guide, you’ll see how the 557 compares to the 557s, how to connect Bluetooth cleanly, how to use the vacuum probe properly (including a rise test), and how the Testo Smart App supports tidy reporting for compliance-style handovers.