Digital Measures Better: Testo Manifolds

In addition to expert knowledge, it is above all precise measuring values which are needed for the comprehensive evaluation and correct regulation of a refrigeration or air conditioning system. And it is right here that Testo's digital refrigeration measuring technology has been proving its worth for years:

  • Far more precise measurement results with more consistent accuracy than with analog manifolds
  • Ongoing updates of refrigerants
  • Automatic calculation of crucial system parameters
  • Convenient operation of manifold and Testo Smart Probes with App and Bluetooth

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.

Everything at a glance.
In your hand.

Digital manifolds Testo

Commissioning a refrigeration system

Find the ideal manifold for refrigeration technology

Whether it is a 2-way manifold, digital manifold with comprehensive features, or the testo Smart Probes: Finding the instrument that is right for you always depends on your requirements. Contact us for more information.

Digital manifolds from Testo

Smart digital manifolds

The digital manifolds testo 550s and testo 557s including Bluetooth and 2- or 4-way valve block feature

  • large graphic display,
  • compact, robust housing,
  • guided measurement menus and
  • the testo Smart App.

High-quality measurement technology, high level of reliability and clever functions for fast and easy measurement and documentation.

Digital Manifolds for Daily Use

The ideal refrigeration technology manifold for day-to-day service. Compatible with the testo Refrigeration App.

  • Remote monitoring and documentation with smartphone/tablet
  • 60 refrigerants stored, updates via App
  • Evacuation via precise vacuum probe

Which application are you interested in?

The digital manifold in use

In addition to the automatic calculation of evaporation and condensation temperature, along with superheating and subcooling, a Testo digital manifold supports you in these applications:

  • Controlling vaporiser superheating
  • Controlling suction steam superheating
  • Checking the effect of internal liquid/suction steam heat exchangers (IWT)
  • Checking the driving temperature difference

How to contact us.

Do you have any questions?
We would be more than happy to help you.


Digital refrigeration measuring technology can do it better

Digital manifolds and the testo Smart Probes AC & refrigeration test kit outperform analog measuring technology in many respects.

Digital Manifold for Light Use

2 wege Monteurhilfe

The compact 2-way manifold for service and maintenance.

  • 60 refrigerants stored
  • Calculates condensation and evaporation temperature in real time
  • Temperature-compensated leakage test

Digital Manifold with Data Logging


The digital manifold for every refrigeration challenge.

  • Connections for clamp meter, oil pressure probe and up to three temperature probes
  • Integrated vacuum measurement
  • Uninterrupted recording of measuring values for up to 999 hours

Measuring with a
Testo Digital Manifold:

  • you have all refrigeration and air conditioning systems under control.
  • you improve the efficiency and ecological balance sheet of your systems.
  • you increase your customers' satisfaction.
  • you avoid unnecessary servicing work. 
  • you work in an efficient and forward-looking way using digital measuring technology.

testo Smart Probes AC & refrigeration test kit

testo Smart Probes AC & refrigeration test kit

Perfect for testing

  • 2 high-pressure gauges (testo 549i) and 2 clamp thermometers (testo 115i)
  • Includes a testo Smart Case, with available spaces for additional testo Smart Probes
  • Operation with the testo Smart Probes App and your smartphone/tablet
  • Low refrigerant loss thanks to hoseless application
  • Over 80 refrigerants stored
  • Measuring ranges: -40 to 302°F; -1 to 60 bar

More measuring instruments for the refrigeration professional.

More measuring instruments for the refrigeration professional.

For precise pressure measurement

A pressure gauge ensures that water and gas pipes, along with gas heating systems, function properly. An absolute pressure meter is in turn particularly suitable for flow measurement in ducts, laboratories and production processes, because it compensates the density here.

For reliable vacuum measurement

Do you want to evacuate refrigeration systems in accordance with the manufacturer's specifications regarding absolute pressure? Then you should take a look at our testo 552 vacuum gauge. Its high-precision, flexible alarm threshold values and App connection provide everything you could possibly wish for.

For reliable leak detection

A Testo leak detector is an indispensable tool for detecting escaping refrigerant and gas leaks.  Testo leak detectors feature alarms and flexible probes to ensure more safety and convenience.

Heat pump knowledge in 4 modules

Understand, correctly plan and measure heat pumps. Download guide now.