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.

R32 is now the dominant refrigerant in new Australian HVAC-R installations, and not every recovery machine is compliant for the job. This guide explains why R32's A2L flammability classification requires spark-free certified equipment, what spark-free actually means inside the machine, and how to adapt your recovery technique for safe, compliant R32 work on any Aussie job site.

Learn why charging by weight matters, compare Mastercool scale models 98201, 98210-BL Bluetooth and 98315 wireless, and keep your scale accurate with proper calibration

Running refrigerant recovery correctly is more than just connecting a machine and pressing start. This step-by-step guide covers the full Mastercool recovery workflow: pre-job safety checks, high and low-side connection sequence, choosing liquid or vapour recovery mode, monitoring the active cycle, and completing post-recovery documentation to stay ARCtick compliant.

Compare Mastercool and Robinair recovery machines side by side. R32 capability, local support, total cost of ownership and which suits Australian tradies best.

A quality recovery machine is a legal requirement for every ARCtick-licensed HVAC-R technician in Australia — and the right one pays for itself fast. This guide covers how Mastercool recovery machines work, which model in the MC69000–MC69400 series suits your job mix, R32 spark-free requirements, and how to keep your machine running reliably for years.

Matching the right Testo 420 flow hood to the outlet is the first step to a commissioning result you can sign off on. This guide covers all four hood sizes in the Testo 420 range, explains how to select the right option for square, linear and oversized outlets, and walks through flow straightener maintenance and storage. Practical advice for ARCtick-licensed HVAC-R techs, mechanical contractors, and anyone doing volume flow measurement on Australian commercial or residential sites.

The Testo 420 balometer is the go-to volume flow measurement tool for Australian TAB contractors. This guide covers multi-point measurement technique, swirl outlet correction, and app-based commissioning documentation across offices, hospitals, schools and data centres. Practical guidance for HVAC-R technicians and mechanical contractors working to Australian commissioning standards.

Accurate TAB and commissioning results depend on more than just owning the right instrument. This step-by-step guide covers the complete Testo 420 measurement process: setup, Bluetooth pairing, hood selection and mounting, reading stabilisation, on-site data logging, and the most common errors that cause incorrect readings on real jobs. Practical guidance for Australian HVAC technicians doing commercial commissioning and air balancing work.

Mechanical balometer or Testo 420 digital flow hood? This guide compares both across accuracy, swirl outlet performance, data logging, total cost of ownership, and suitability by user type. Practical decision support for Australian TAB contractors, HVAC-R technicians, and facilities maintenance teams.

Learn how the Testo 420 flow hood helps HVAC technicians measure air volume, balance commercial systems, choose the right hood size, use accessories and generate accurate commissioning reports.

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.