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Measuring solutions for refrigeration technology

Your job: effortless.

Refrigeration measurement technology smart & simple – with perfectly connected instruments.

In refrigeration technology, one thing counts above all: generating precise measurement results with as little effort as possible. That's exactly what our measuring devices are designed for. By using smart technology, Testo has managed to reduce the work and time effort while simultaneously guaranteeing high quality and precision of the measurement results.

Perfectly connected instruments for refrigeration circuit control

The digital manifolds from Testo have proven themselves for years due to their precision, quality and ease of use.

  • Far more precise measurement results with more consistent accuracy than with analog manifolds

  • Ongoing updates of refrigerants

  • Automatic calculation of crucial system parameters

Our manifolds and Smart Probes at a glance

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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Compatible with all Bluetooth-enabled Testo measuring instruments


Direct report dispatch by e-mail


All measurement values at a glance


Intuitive measurement menus


Free download, free use


PRO measuring programs

Important applications

Vacuum gauges

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Evacuating/ vacuum measurement

Professional and highly precise pressure measurement

Refrigerant scales

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Automatic and precise charging according to target value

Electrical measurement

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Electrical testing

Safe testing of all electrical parameters of equipment and components

Leak detector measuring instruments

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Leak detection/ tightness testing

Reliable detection of the smallest leaks for all common refrigerants

Mini thermometer

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Temperature measurement

Flexible temperature measurement of components and ambient air

Digital manifold testo 570s

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Long-term measurement

World's longest battery life of up to 360 hours and large data memory


Servicing heat pumps

At Testo, you’ll find the right measurement technology for a cost and energy efficient operation of heat pumps. You also make sure the environment isn’t burdened by any leaked refrigerant.

  • Pressure and temperature testing

  • Controlled refrigerant service

  • Easy tightness testing and evacuation

Everything around the topic of refrigeration measurement technology

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Practical guide

Refrigeration knowledge in three modules

Download the exclusive practical guide for free now.

To download

Understanding refrigeration systems

Evaluating refrigerants


Main components of the compression refrigeration circuit

Subcooling / Superheating

And much more ...

What customers say about Testo digital manifolds

What else I would like to say to other installers, the device really saves a lot of time, you don't have to take as much stuff with you, you don't have to do as much yourself, because the testo 557s does everything for you.

Tom Siben


Service technician at Lennox

In the past, we had to work with analogue measuring devices and needed a notepad and we needed external temperature sensors. Testo has now incorporated all of this into a single device. This makes it much easier and much quicker for us to satisfy the customer with the performance of their device.

Peter van Vliet



My first impression is very positive, a very nice, new measuring set, the purchase of which you certainly won't regret as a cooling technician. I don't think any other brand can compete.

Marco Slump


Owner of Slump Heating and Refrigeration, Appingedam (NL)