HVAC Shop Blog

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.

Surface temperature measurement is one of the most common diagnostic tasks in HVAC-R — and one of the most frequently done wrong. A dirty contact surface, poor probe placement, zero insulation from ambient air, and reading before the display has settled: these four mistakes alone account for most of the inaccurate results tradies bring back from the field. This guide covers correct technique from surface prep through to documentation, so every reading you take is defensible, repeatable, and actually tells you something useful about the plant you're working on.

CFM testing stops airflow guesswork. This practical Australian guide shows how to measure air velocity with an anemometer, calculate CFM using area, and get repeatable supply and return readings you can trust. Learn the simple field method, common mistakes that ruin results, and how Aussie conditions like Brisbane humidity and coastal corrosion can make airflow faults show up fast.

Go wireless on your next service call with Testo Smart Probes. This guide explains the full Testo Bluetooth probe system, the Smart App’s reporting features, and which kits suit Aussie HVAC work—Sydney high-rises, Brisbane humidity, Melbourne cold snaps, and more. Learn how to use 115i, 549i and 605i probes to diagnose faster, work safer, and reduce call-backs.

Fieldpiece clamp meters make HVAC electrical testing faster and safer in real Australian conditions. This guide breaks down popular models like the SC440 and compact SC240 options, explains True RMS and microamp testing in plain language, and helps you choose the right meter for service, install, and fault-finding work—without the guesswork.

Choose the right Testo Smart Probes for Aussie jobs—115i, 549i, 605i, 410i. See starter loadouts, kit vs individual buys, and faster Smart App reports.

Struggling with uneven temperatures and poor airflow? This guide breaks down HVAC air balancing, including how to measure CFM, when to use anemometers vs airflow capture hoods, and how proper balancing improves system efficiency, comfort, and performance.