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    Measuring instruments for indoor air quality and comfort levels

    For an optimal indoor climate.

    Regular measurements of indoor air quality and comfort at workplaces allow for precise adjustment of the room climate.

    Measuring instruments from Testo help you to ensure a comfortable climate in all rooms.

    Reliable indoor air quality and thermal comfort measurement

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    Additional climatic factors for an optimal indoor climate

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    Every flow measurement under control - in ducts or at outlets

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    Measuring comfort and indoor air quality in accordance with standards

    The universal air velocity & IAQ measuring instrument testo 400

    With the universal climate measuring device testo 400, you can check all parameters of indoor air quality and comfort according to current guidelines and standards:

    • Objective statement on thermal comfort thanks to PMV/PPD measurement according to DIN EN ISO 7730

    • Standard-compliant determination of turbulence, draughts, and indoor air quality according to DIN EN ISO 7730

    • Determination of comfort levels at hot work stations WBGT measurement

    Overview of our product recommendations for you

    Multifunctional climate measuring devices

    Compact

    testo 440

    testo 440 multifunction measuring instrument

    Measure 7 parameters with one device - testo 440

    Professional

    testo 400

    Universal measuring instrument testo 400

    One measuring instrument for all climate-related parameters

    Applications

    Monitoring indoor air quality

    The carbon dioxide concentration, temperature and humidity levels are deemed to be the most important indicators that the quality of the indoor air is good enough.

    • Evaluate indoor air quality through CO2- and other measurements

    • CO2 concentration should not exceed 1000 ppm

    Testo offers you numerous measuring devices, which are particularly suitable for measuring these parameters.

    Practical guide

    Indoor air quality and comfort level in the workplace

    Download the exclusive practical guide for free now.

    Go to download

    What does indoor air quality mean?

    Monitoring indoor air quality in practice

    What is thermal comfort level?

    Reasons for using measuring technology

    Actions taken by a measuring technology technician in the event of a complaint

    And much more ...

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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

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    Multifunctional

    Compatible with all Bluetooth-enabled Testo measuring instruments

    Efficient

    Direct report dispatch by e-mail

    Fast

    All measurement values at a glance

    Easy

    Intuitive measurement menus

    Clever

    Free download, free use

    NEW

    Professional measuring programs

    Our services

    Contact

    Do you have any questions or would you like a personal consultation?
    We're here to help.

    Customer services

    In case of any instrument faults, simply send in your meter with a short description on the Service and Calibration form. Please also include your telephone number for any queries. Our Service team will notify you when the instrument is ready.

    Calibration

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