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Digital manifolds

In addition to expert knowledge, it is above all precise measurement values which are needed for the comprehensive evaluation and correct regulation of a refrigeration plant, air conditioning system or heat pump. And it is here that the digital refrigeration measurement technology from Testo has for years proven its worth:

Digital measures better: This is what a manifold from Testo can do

  • Testo offer a range of digital manifold gauges to help you fulfil any and all refrigeration measurements. With your refrigeration manifold, digital measures better, and now Testo are offering a whole new range of digital manifold gauges including the testo 550i – the first fully digital manifold gauge.

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

  • Ongoing updates of refrigerants

  • Automatic calculation of crucial system parameters

Digital manifolds from Testo

The smart solution for effortless cold jobs.

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 ...

The right measuring instrument for every application.

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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)

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

Find out more


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

testo Smart Probes

Support the daily work with the digital manifolds.

Perfect interaction between our digital manifolds and our NEW refrigerant scale testo 560i

World innovation – digital refrigerant scale testo 560i

  • Automatic filling of refrigeration systems and heat pumps by intelligent valve

  • Easy and wireless with the digital manifolds and the testo Smart App

  • Handy and compact

Other measuring instruments for refrigeration, air conditioning or heating pros

More moisture meters from Testo