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Surface temperature meters

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Surface temperature measurement

The detection of the surface temperature is of crucial importance for very many processes in industry and trade. Among other things, it enables compliance with the quality criteria of products and systems in heating construction, the building trade, the energy sector and the manufacturing industry.

A Testo surface temperature meter offers you the following

  • Intuitive operation and high-precision measurement results

  • Comprehensive portfolio of exchangeable probes for every application – customised products are also possible

  • Robust construction for daily use

  • Calibration by the experts in our subsidiary, Testo Industrial Services

Products for the measurement of temperature on surfaces

Important applications

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Calibrating a surface measuring instrument

“The measurements you take are always out, you just need to know by how much.” There is a lot of truth in these words from Dave Packard, the co-founder of Hewlett-Packard. And, in order to know how accurate (or how inaccurate) your measurements are, a surface temperature meter also needs to be calibrated regularly. This is the only way to ensure that the measurement carried out with it has really been accurately performed.

One for all: multifunction measuring instruments

Measuring surfaces, recording temperature on surfaces – and all the other VAC parameters too! We developed our testo 440 and testo 400 multifunction measuring instruments specifically for these tasks. They are used to record all relevant VAC parameters in office, residential and industrial buildings – intelligently, highly accurately and according to the standards.

A multifunction surface measuring instrument offers you:

  • a complete probe range for versatile applications

  • guided measurement menus for HVAC grid and comfort level measurements

  • Precise results in every measuring range

Multifunctional measuring instruments in comparison

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testo Smart App

One App for all applications

The testo Smart App guides you quickly and easily through measurements on refrigeration, air conditioning and heating systems.

New feature:

Professional measuring programs for increasing the efficiency of your applications

Find out more


Compatible with all Bluetooth-enabled Testo measuring instruments


Direct report dispatch by e-mail


All measurement values at a glance


Intuitive measurement menus


Free download, free use


Professional measuring programs