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    Refrigeration technology

    Evacuating refrigeration systems

    The professional and reliable execution of an evacuation is an indispensable work step before the initial commissioning or recommissioning of a refrigeration system. This ensures that there is no moisture, foreign gases, oil and refrigerant residues in the refrigeration system before charging.

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    Automatic evacuations with the testo 565i smart vacuum pump

    testo Smart App
    Manifolds with vacuum measurement
    Classic vacuum gauges
    testo 565i

    Vacuum gauges

    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.

    Now new:

    PRO 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

    PRO measuring programs

    Further applications

    Manifolds and Smart Probes

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    Refrigeration circuit control

    Efficient and reliable testing of systems

    Manifolds and Smart Probes

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    Refrigeration circuit control

    Commissioning and service - fast, flexible and precise

    Refrigerant scale

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    Charging

    Automatic and precise charging according to target value

    Electrical measuring instruments

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    Electrical testing

    Safe testing of all electrical parameters of equipment and components

    Leak detectors

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    Leak detection/ tightness testing

    Reliable detection of the smallest leaks for all common refrigerants

    Thermometer

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    Temperature measurement

    Flexible temperature measurement of components and ambient air

    Everything around the topic of refrigeration measurement technology

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    News

    Measurement technology for heat pumps

    At Testo, you will find the appropriate measurement technology to operate heat pumps cost-effectively and energy-efficiently. In addition, you also ensure that the environment is not polluted by leaking refrigerant.

    • Check pressure and temperature

    • Controlled refrigerant service

    • Easy tightness testing and evacuation

    Find out more
    Practical guide

    Refrigeration knowledge in three modules

    Download the exclusive practical guide for free now.

    To download

    Understanding refrigeration systems

    Evaluating refrigerants

    Thermodynamics

    Main components of the compression refrigeration circuit

    Subcooling / Superheating

    And much more ...

    The digital manifolds in use

    Thanks to the large colour display and wireless connection to the probes, all important parameters are visible at a glance. The 30-minute trend curves also ensure even more reliable analysis.

    With the testo 558s, the system density can be assessed easily and reliably, thanks to the clear visualization of pressure values and temperature compensation.

    HVAC/R magazine

    Just know
    what works.

    More news, more tools: In our free HVAC/R magazine, you can find out all about the major technological trends in the industry, get valuable professional tips and exciting insights into the testo Smart World.

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    Trend radar:
    Technologies of the future

    The smartest manifold of all time

    New, smart refrigeration portfolio

    Exclusive professional tips

    And lots more!