Our refrigeration measurement technology – intuitive, efficient, reliable

Where refrigeration and air conditionings systems and heat pumps need to provide efficient performance, you are always on the safe side with the flexible measuring instruments from Testo:

  • testo Smart Probes AC & refrigeration test kit for fast testing: 2 high-pressure measuring instruments and 2 clamp thermometers in the new, large testo Smart Probes HVAC softcase.
  • Digital manifolds testo 550/557 in a kit with 3-hose/4-hose filling set: The robust allrounders with innovative features for efficient service.

How to contact us.

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


Perfect for service.

  • Calculation of superheating and subcooling in real time
  • Temperature-compensated tightness testing, automatic ambient pressure measurement
  • 60 refrigerants stored in the instrument
  • User-optimized operation and testo refrigeration App, incl. documentation and refrigerant updates
testo refrigeration App

testo refrigeration App

  • Monitoring of the current measurement
  • Easy refrigerant updates
  • Create reports, adds photos, and send by e-mail

Perfect for testing.

  • 2 high-pressure measuring instruments (testo 549i) and 2 clamp thermometers (testo 115i) in testo HVAC softcase
  • In the softcase: Spaces for further Testo Smart Probes
  • Intuitive operation with the testo Smart App and your smartphone/tablet


testo Smart Probes App

testo Smart App

  • Wireless control of the Testo Smart Probes
  • Calculate evaporation / condensation temperature and superheating / subcooling
  • Analyze measurement data, add photos and send them by e-mail

Download application example digital refrigeration measurement technology

  • Efficient adjustment of refrigeration systems
  • Advantages of digital measurement technology over analog manifolds

Download product comparison digital refrigeration measurement technology

Product comparison Testo manifolds
  • Comparison: Analog manifolds vs. digital manifolds vs. Testo Smart Probes

More products for refrigeration service

Adjusting refrigeration systems

Commissioning and service - fast, flexible and precise

Evacuating refrigeration systems

Evacuate a refrigeration system or heat pump before commissioning. Testo makes sure you always have high-precision vacuum measurement.

  • Reliable monitoring of absolute pressure
  • Monitoring of readings via App
  • Pressure measurement and automatic calculation of the evaporation temperature of water

Finding leaks

Reliable detection of the smallest leaks for all common refrigerants

Electrical testing

Safe testing of all electrical parameters of equipment and components