Products

The testo 316-3 is our best refrigerant leak detector yet, and delivers dependable, rugged performance at a great value. The heated diode sensor pr...

Leaks on a refrigeration system or heat pump have serious consequences. The system no longer provides the required cooling capacity and, in the wor...

Leaks on a refrigeration system have very serious consequences: The required cooling capacity is reduced and, in the worst-case scenario, the syste...

Precise technology: That’s what you want to be able to rely on when you’re working out in the field. But precise technology is nothing if it is not...

The Testo 400 is the universal measuring instrument for all IAQ professionals. Measure, analyze, and document all IAQ and comfort level parameters ...

If, in your capacity as an HVAC engineer, you carry out fast check measurements in ventilation ducts or in rooms, then our testo 405 thermal anemom...

No more surprises: the testo 405i thermal anemometer with smartphone operation from the Testo Smart Probes series is ideal for carrying out measuri...

It fits perfectly into any shirt pocket: the testo 410i vane anemometer is ideal for measuring air velocity and temperature at air outlets and vent...

The testo 410-1 vane anemometer is impressive thanks to its practical pocket size and is ideal for fast check measurements. With a measuring range ...

Ideal for rapid measurement at ventilation grilles (air outlets) and for inspecting air conditions – also outdoors: use the testo 410-2 vane anemom...

The testo 416 vane anemometer provides you with quick and reliable airflow readings on an easy-to-read, backlit display.The permanently connected t...

With the compact 16mm vane anemometer Testo 416 with telescopic probe and App connection, you can carry out flow measurements in the ventilation du...

The compact vane anemometer Testo 417 was developed to make it as easy as possible for you to take measurements on air inlets and outlets of air co...

The compact vane anemometer Testo 417 in a kit including two measurement funnels was developed to make it as easy as possible for you to take measu...

The compact vane anemometer Testo 417 in the kit including two measurement funnels and a flow straightener was developed to make it as easy as poss...

The testo 417 vane anemometer allows you to measure air flow speed, volumetric flow rate and temperature simultaneously. The integrated vane makes ...

Replacement hood (610 x 1220 mm) for mounting on the testo 420 volume flow hood for measurements at air inlets and outlets. With integrated flow st...

Replacement hood (610 x 1220 mm) for mounting on the testo 420 volume flow hood for measurements at air inlets and outlets. With integrated flow st...

The testo 420 differential pressure measuring instrument is suitable for accurate differential pressure measurement up to 120 Pa, e.g. when checkin...

Replacement hood (915 x 915mm) for mounting on the Testo 420 volume flow hood for measurements at air inlets and outlets. With integrated flow stra...

The Testo 420 volume flow hood for larger air inlets and outlets enables fast and precise compliance with hygiene guidelines and requirements conce...

Optimally adjusted air conditioning and ventilation systems are decisive factors for modern buildings. Accordingly, it is important to use the appr...

Kit for carrying out measurements in ventilation ducts. The testo 440 air velocity and IAQ measuring instrument and the vane probe (Ø 16 mm) are sa...

Kit for evaluating the indoor air quality. The testo 440 air velocity and IAQ measuring instrument and the CO2 probe with Bluetooth® including temp...