Test & Measurement (HVAC/R)

Choose the right test gear for the job

When you’re diagnosing a fault or commissioning a system, the “right” tool is the one that gets you to a reliable decision fast — without guesswork. This collection brings together HVAC/R test and measurement gear for electrical checks, refrigeration diagnostics, airflow/IAQ and temperature logging, so you can build a kit that suits the work you actually do day-to-day.

Quick pick: match the task to the tool

Popular types in this collection

• Digital manifolds & gauge tools: great when you want fast readings, recordings, and cleaner workflows on service calls.
• Clamp meters & multimeters: for current draw, voltage, capacitors, motors and control diagnostics (electrical work is technician-only).
• Manometers & airflow meters: for static pressure, filter loading, duct issues, ventilation checks and balancing work.
• Thermometers, clamps & probes: for accurate pipe/air temps, Delta-T checks, and commissioning baselines.
• Leak detection & analysis: for pinpointing leaks and confirming system integrity before/after repairs.
• Accessories & spares: cases, replacement filters, probe tips and consumables that keep your instruments dependable.

What to consider before you buy

1) The measurements you actually need. Start with the jobs that make you money: electrical checks, pressure/temperature, evacuation integrity, airflow and leak verification. Buying “everything” usually means buying the wrong thing first.

2) Probe & accessory compatibility. A lot of the value lives in the add-ons — pipe clamps, surface probes, spare filters, hoses and carry cases. If you’re expanding an existing kit, confirm connection types and any required adapters.

3) Jobsite practicality. Think about screen readability in plant rooms, one-handed use on ladders, magnetic hang points, protective housings, and whether you want app/Bluetooth logging for reports and repeat service work.

4) Safety & licensing. Electrical testing and repairs should only be carried out by suitably qualified/licensed people. Refrigerant circuit work that could cause leakage requires the correct Refrigerant Handling Licence in Australia. For the rules and guidance, see the DCCEEW RAC technician guidance and the ARC Refrigerant Handling Codes of Practice.

Common mistakes we see (and how to avoid them)

• Buying a manifold first when you really need evacuation confidence: if evacuation is a core task, prioritise micron measurement and vacuum-rated setup.
• Ignoring CAT safety ratings for electrical meters: always match meter ratings to the work environment and follow manufacturer guidance.
• Skipping spare filters/O-rings for leak detection: planned spares reduce downtime and keep readings reliable.
• No plan for accessories: clamps, probes, hoses and cases often make the difference between “works” and “works fast”.

FAQs

What test instruments should every HVAC tech start with?

Most techs start with electrical testing (clamp meter/multimeter), temperature probes, and the right refrigeration diagnostics for their work (manifold/probes, evacuation verification, and leak detection). Build outward based on your most common callouts.

Do I need a 2-valve or 4-valve digital manifold?

Choose based on workflow and the systems you service. 2-valve setups can suit many service tasks, while 4-valve options can support more complex charging/evacuation processes. If you’re unsure, compare features and what’s included on each product page.

What’s the difference between a manometer and an anemometer?

A manometer measures pressure (including differential/static pressure), which is useful for diagnosing restriction and duct performance. An anemometer measures air velocity/flow, useful for airflow verification and balancing work.

Can anyone use refrigerant leak detection tools?

Leak detection is often part of licensed refrigeration work. If the task involves the refrigeration circuit or could cause refrigerant leakage, make sure it’s carried out by appropriately licensed people and follow the relevant codes of practice.

What spares should I keep on hand for test gear?

Common spares include probe tips/clamps, meter leads and clips, batteries, protective cases, and leak detector filters/O-rings (where applicable). Keeping consumables ready reduces downtime on service calls.

Explore related ranges: Shop by brand, diagnostic bundles, and HVAC guides & how-tos.

Last updated: 21 March 2026