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    Instrumentation 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.

    Testo measuring devices help you ensure a comfortable climate in all rooms.

    Reliable indoor air quality and thermal comfort measurement

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    Additional factors for an optimal indoor climate

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    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 testo 400 Multifunction IAQ Meter, 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

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

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

    • Determination of comfort levels at hot work stations WBGT measurement

    Overview of our products

    Multifunction IAQ Meters

    Compact

    testo 440

    testo 440 Multifunction IAQ Meter

    Versatility in a Compact Design

    Professional

    testo 400

    testo 400 Multifunction IAQ Meter

    One measuring instrument for all climate-related parameters

    Applications

    Measurements of indoor air quality

    The carbon dioxide concentration and the indoor air quality in interiors 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 at work

    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?

    Reasons for using measurement technology

    Remedial procedures in the event of a complaint

    And much more...

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    testo Smart App

    One app for all measurements

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

    New Features:

    PRO measuring programs to increase the efficiency of your applications

    >> Adjustments to the ventilation system

    >> Multi-measuring point measurement

    More Info

    Multifunctional

    Compatible with all Bluetooth-enabled Testo measuring devices.

    Efficient

    Reports can be sent directly via email.

    Fast

    All measured values at a glance.

    Simple

    Intuitive menus

    Clever

    Free to download, free to use (Base App)

    NEW

    PRO Measurement Programs (subscription required)

    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 a quotation for repairs within 3 days

    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.