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 Testo launches all-new range of compact HVAC measuring instruments

The right measuring instrument for every application: Introducing the new compact handheld measuring instruments from Testo. Delivering precise results wherever you need them – fast, flexible, user-friendly and connected to smartphones and tablets. The new compact class range from Testo are perfect for installing and maintaining air conditioning and ventilation systems, servicing heating systems, ensuring indoor air quality and comfort, measuring pressure across HVAC and industrial applications, or measuring temperature in food and laboratory environments. Testo’s all-new HVAC measuring instruments demonstrate the proven precision, quality and reliability already associated with the Testo brand.

Not enough time in the day, endless to-do lists and time-consuming tasks: These are the moments when engineers can depend on the new compact measuring instruments from Testo. Measurement values are determined and displayed quickly via the user-friendly testo Smart App. Not only does the App ensure all measurement menus are available, it also allows a practical second screen function, measured value storage, analysis and documentation in the smart assistant at any time.

Advantages at a glance


  • Compact design
  • Robust
  • Intuitive operation
  • Print reports on site
  • testo Smart App


  • Measurement results immediately
  • Configuration with the testo Smart App
  • Automatic volume flow calculation
  • Two displays show more than one


  • Digital probes proven in practice
  • Helpful measurement menus
  • Complex measurements, compactly simplified
  • Documentation with the testo Smart App

Air conditioning and ventilation systems

Smooth and energy-efficient operation of air conditioning and ventilation systems can only be ensured by regular measurements of the relevant parameters. With the new compact measuring instruments testo 417, testo 416 and testo 425, flow and volume flow measurement in ventilation ducts, at air inlets and outlets and when adjusting balanced residential ventilation is easier than ever.

More comfort indoors

We spend almost 90% of our time indoors every day. Indoor air quality and comfort are therefore essential for minimising health risks and ensuring performance in the workplace. Thanks to the new compact measuring instruments testo 535, testo 545 and testo 625, CO2, illuminance, temperature, and humidity are controlled quickly, easily and precisely, ensuring a healthy indoor climate that promotes performance.

Pressure measurement simple and compact

The two new differential pressure measuring instruments testo 512-1 and testo 512-2 can be used to measure low and high pressures quickly and precisely, when checking heating systems for example. The all-new testo 512 manometers offer users a reliable tool for pressure measurement in industrial applications or for checking filters and Pitot tube measurement on air conditioning and ventilation systems.

Versatile and precise measurement of temperature

Temperature is the most universally measured value when it comes to control of heating, cooling or ventilation systems, industrial equipment or in a laboratory and food environment. With the new temperature measuring instruments testo 922, testo 925 and testo 110 (HACCP-compliant) and the large selection of probes (TE Type K, NTC, Pt100), even extremely high and low temperatures can be measured precisely, quickly, and easily in almost any medium. With the optional TopSafe, the instruments are protected against dust and water according to IP65.

Testo Smart App
The testo Smart App provides support for all measurements, with intuitive measurement menus for all HVAC applications, fast configuration, tabular and graphical display of measured values, second screen function and uncomplicated documentation. The App can be downloaded free of charge from the App store and is regularly updated.

Testo’s new compact measuring instruments are available from 1st February: For more information, visit or contact your local dealer.


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