HVAC Shop Blog

Charging refrigerant by weight is the professional standard in Australian HVAC-R work. The Mastercool 98210-BL Accu-Charge II takes the process wireless with Bluetooth monitoring via the Mastercool Connect app. This guide covers what makes the 98210-BL worth the step up, how to get it paired and reading correctly from day one, and the real workflow improvements it delivers on the tools.

Surface temperature probes are one of the most-used tools on a working HVAC/R technician's belt. When you need an accurate temperature reading from a pipe surface, motor housing, compressor case or coil, contact measurement gives you something an infrared gun simply cannot: direct thermal coupling with the surface itself. This guide covers probe types, accuracy factors and how to pick the right Testo surface probe for every job.

The Testo 115i is a wireless clamp thermometer built for HVAC/R technicians who need fast, reliable pipe temperature readings without holding a probe in place. Purpose-built for superheat and subcooling calculations and refrigerant charging workflows, it connects via Bluetooth to the Testo Smart App so both hands stay free for gauges and service valves. This guide covers who should use it, how to get accurate readings, and where it fits in your toolkit.

Surface temperature measurement runs through almost every aspect of HVAC/R service work — from refrigerant charging and compressor diagnostics to coil performance checks and motor overheating detection. Getting it right means using the correct probe type at the right location, with proper contact and insulation. This guide maps the main surface measurement tasks to the probes and techniques that deliver accurate, reliable results in the field.

Tired of mismatched hoses, missing clamps, and messy readings on site? This guide breaks down the testo gauge accessories Aussie techs rely on most, including Testo clamp probes, filling hoses, the Testo Smart App, and 560i scale integration—so you can work faster, charge with confidence, and finish with clean job reports.

Learn how R32 refrigerant recovery works, why A2L-compatible recovery gear matters, and what technicians need to know about recovery machines, cylinders, pressures, and safe handling in Australia.