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Measurement solutions for air conditioning and ventilation technology

Testo measuring instruments for air conditioning and ventilation measurement technology

For an optimum indoor climate and better energy efficiency.

Ventilation and air conditioning systems consume a lot of energy. However, they are indispensable for a pleasant room climate. Measuring instruments from Testo help you to control the systems efficiently in order to quickly achieve significant savings and ensure a comfortable climate in all rooms.

Flow measurement in ducts and at outlets

Every flow measurement under control - in ducts or at outlets

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Measuring indoor air quality and thermal comfort

Reliable indoor air quality and thermal comfort measurement

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Ventilation and air conditioning systems

Flow measurement with Testo:

convenient, precise, reliable.

For flow measurement in the duct and at the outlet, Testo offers you various measurement solutions - from small Testo Smart Probes to digital anemometers to multifunctional climate measuring instruments.

Discover the suitable measurement solution for your individual requirements.

Determine volume flow in a standard-compliant and convenient way

With the universal air velocity & IAQ measuring instrument testo 400

The testo 400 is a multifunctional air velocity & IAQ measuring instrument that allows you to measure volume flows in ducts and outlets efficiently, intuitively and in compliance with EN ISO 12599 and ASHRAE 11:

  • Intuitive measurement programs, incl. HVAC grid measurement

  • Convenient measurement

  • Efficient data management

  • Intelligent calibration concept

Overview of our product recommendations for you

Multifunction measuring instrument testo 440 for any air conditioning application

Compact

testo 440

Multifunctional testo 440

Versatility in a compact design

Universal measuring instrument testo 400 for all climate-related parameters

Professional

testo 400

Universal measuring instrument testo 400

One measuring instrument for all climate-related parameters

Volume flow hood testo 420

Uniquely light and ideal for measurements at large outlets

Choose your application

Measurements in the ventilation duct

Maintaining the air flows in the ventilation duct is crucial for the function of the ventilation and air conditioning system. If the air flows are lower than planned, the removal of room loads (heating, cooling and material loads) may not be guaranteed under certain circumstances. Therefore, it is particularly important to ensure the most accurate possible measurement of air flows.

Testo offers you numerous measuring instruments that are particularly suitable for measuring in ducts and air conditioning systems.

Measuring air flows in the ventilation duct

New: testo 318 – endoscope

The efficient optical inspection

The new testo 318 endoscope is ideal for the efficient inspection of flues, chimneys, boilers, air conditioning and ventilation systems and offers simple, precise and fast identification and removal of sources of interference at a perfect cost/benefit ratio.

Endoscope testo 318

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PRO measuring programs for increasing the efficiency of your applications

Our services

Contact

Do you have any questions or would you like a personal consultation?
We would be more than happy to help you.

Customer services

In case of malfunctions, send in your meter with a short description of the error. Please also include your telephone number for any queries. Normally you will receive your meter back within one week.

Calibration

Our subsidiary Testo Industrial Services supports you every day in ensuring quality while always complying with the relevant standards and guidelines. You get all the services you need for this from a single source.

HVAC/R Magazine 02/2025

Free of charge, full of value.

Our latest HVAC/R magazine gives you insight into the most important technological trends in the industry – and the tools you need to stay ready for change. You’ll also find expert tips and real-world examples that help you work more efficiently with testo instruments.

Contact
Max Sievert A-S
Sagveien 21 A
0459Oslo
Norway
+47 22 99 20 90

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