Collection: Testo HVAC Instruments & Digital Manifolds

Testo HVAC Instruments & Digital Manifolds – Australian Trade Supplier

Testo is one of the world's leading manufacturers of professional measurement instruments, and their HVAC range is built specifically for the demands of air conditioning, refrigeration, and building services work. German-engineered, field-tested, and backed by the Testo Smart App ecosystem — these instruments are trusted by technicians across Australia for commissioning, diagnostics, compliance, and service work.

What's in the Testo Range

• Digital manifold gauges — the Testo 550 and 557 series with Bluetooth connectivity, automatic superheat/subcooling, and a 60+ refrigerant library
• Anemometers — vane and hot-wire anemometers for airflow measurement at grilles, diffusers, and in ducts
• Thermometers — contact, infrared, and multi-channel temperature instruments for surface, air, and pipe checks
• Thermohygrometers — combined temperature and humidity meters for IAQ, mould risk, and commissioning
• CO2 meters — indoor air quality monitoring for ventilation compliance and building assessments
• Thermal imagers — the Testo 865 and 883 series for visualising heat distribution and fault finding
• Differential pressure meters — for duct static pressure, filter pressure drop, and gas pressure checks
• Smart Probes — compact Bluetooth instruments (405i, 510i, 605i, 805i) that use your smartphone as the display

The Testo Smart App Ecosystem

Most Testo instruments connect to the free Testo Smart App (iOS and Android) via Bluetooth. From the app you can:

• View live readings and trends on your phone or tablet
• Log measurements with location notes and timestamps
• Generate professional PDF and CSV reports for clients and compliance records
• Set alarm thresholds and receive notifications
• Manage multiple instruments simultaneously

Popular Testo Instruments

• Testo 550s Digital Manifold — Bluetooth manifold with wireless temperature clamps for automatic superheat/subcooling
• Testo 405i Hot-Wire Anemometer — telescopic probe for duct traverses and airflow measurement
• Testo 605i Thermohygrometer — temperature and humidity with dew point calculation
• Testo 805i IR Thermometer — non-contact surface temperature with 8-point laser circle
• Testo 865 Thermal Imager — 160 × 120 px thermal camera for fault finding and building diagnostics

Related Categories

• All Digital Manifold Gauges — compare Testo with Fieldpiece and Mastercool
• Bluetooth Smart Tools — wireless instruments across all brands
• Test & Measurement Tools — the full diagnostic instrument range
• Fieldpiece HVAC Tools — compare with the Fieldpiece Smart Probe ecosystem

Frequently Asked Questions

Are Testo instruments covered by Australian warranty?

Yes. Testo instruments typically carry a 24-month manufacturer's warranty on the instrument and 12 months on accessories. Register your instrument with Testo for potential extended coverage.

Do Testo Smart Probes work without a smartphone?

Testo Smart Probes (405i, 510i, 605i, 805i) are designed to use your smartphone as the display via the Testo Smart App. They do not have a built-in screen. The Testo 550s and 557s digital manifolds have a built-in display and also connect to the app.

What refrigerants does the Testo 550s support?

The Testo 550s supports 60+ refrigerants including R32, R410A, R134a, R404A, R407C, R1234yf, and many others. The refrigerant library is updated via the app.