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1 year's extra warranty

This year's special highlight: if you register your Testo flue gas analyzer with us, you get one year's extra warranty too.

The Testo Smart Probes

The compact professional analyzers can be operated by smartphone/tablet via the testo Smart Probes App and really conveniently transported in the handy testo Smart Case. This means you are ready to go for measurements including the following: Flow and return temperature, Surface temperature, Pressure, Flow.

Testo's electrical measuring instruments

Testo’s voltage testers, clamp meters and multimeters impress thanks to their extraordinary high level of user-friendliness, setting new standards with intelligent technology never seen before. For the reliable control of all electrical parameters on heating systems.

More bestsellers from Testo

So there can be no more surprises - discover our thermal imagers, differential pressure measuring instruments, infrared thermometers and vane anemometers. Always reliable, always accurate and naturally with proven Testo quality.

The testo 440 air velocity & IAQ measuring instrument

Welcome to a new era: the new testo 440 combines the benefits of a compact handheld device with intuitive measurement menus and a comprehensive selection of air velocity & IAQ probes. This means you have all the measuring tasks on air conditioning and ventilation systems safely and reliably under control.