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Testo 557 Digital Refrigeration Manifold Set with Bluetooth

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  • Calculates superheating and subcooling in real time with no manual calculations.
  • 557 connects to smartphone/tablet app for remote monitoring
  • The 60 most common refrigerants all stored within the 557 Manifold

rrp £440.00

now £349.95 (Ex. VAT) £419.94 (Inc. VAT)

rrp £440.00

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  • Description

    Testo 557 Digital Refrigeration Manifold Set with Bluetooth

    The Testo 557 Digital Refrigeration Manifold Set allows HVAC/R service engineers to perform multiple tests on refrigeration and A/C systems and heat pumps. These include a leak test, refrigerant flow, charging and system evacuation using the integrated vacuum measurement aids.

    Now featuring bluetooth compatibility, the Testo 557 Digital Refrigeration Manifold can be used in with the new Testo Refrigeration App. Providing a remote view of your measured values on a Smartphone / Tablet, this app allows you to track changes using the graphical trending function, update the refrigerants in the instrument, create .pdf or .csv (Excel) reports and more, ensuring you get the most from your new digital manifold. 

    The Testo 557 is available both with Sight Glass (0563 1557) or without Sight Glass (0563 1558). Please select you preferred option when adding to basket. Both options include Bluetooth. 

    Testo 557 Set Features:

    • Calculate superheating and subcooling simultaneously
    • Integrated vacuum measurement supports the evacuation of systems
    • Temperature-compensated tightness test
    • Automatic ambient pressure measuring
    • 40 refrigerants are stored in the instrument
    • 4-way valve block for fast and efficient work
    • Bluetooth Compatibility

    A built in vacuum measurement allows users to know when they have successfully evacuated a refrigeration system, while the two temperature inputs mean that superheat and subcooling can be simultaneously calculated and displayed in real-time along with differential temperatures.

    The Testo 557 is a four valve manifold that allows for the connection of a vacuum pump and refrigerant tank at the same time, which minimises the chances of exposing the system to the atmosphere during commissioning. In addition, the automatic heat pump mode means the hoses no longer need to be switched over during testing.

    Ideal for servicing, maintaining and commissioning air conditioning and refrigeration systems, the Testo 557 Refrigeration System Analyser is supplied as standard complete with 2 pliers probes, a calibration protocol and hard transport case. It is also possible to purchase the Testo 557 with a Hose Kit that features four refrigerant pressure hoses and an external vacuum probe. 

    Testo part numbers:
    0563 1557 (w/ Sight Glass)
    0563 1558 (w/o Sight Glass)

    Testo 557 In Use


    Testo Refrigeration App
     Smart Probes
    Refrigeration Kit
    Pressure measuring range HP/LP >60bar >60bar >60bar >60bar >50bar
    Pressure measurement accuracy >0.5% of f.v. >0.5% of f.v. >0.5% of f.v. >0.5% of f.v. >0.5% of f.v.
    Dual-channel temperature measurement  
    Three-channel temperature measurement        
    Four-way valve manifold      
    Internal memory, documentation With App With App With App With App
    Refrigerant profiles stored >80 60 60 60 40
    Refrigerant update Via App No Via App Via App Via EasyKool Software
    Automatic absolute pressure measurement      
    Heat pump mode  
    Temperature-compensated leakage testing  
    Vacuum measurement   Indication Indication External probe
    Compatible with EasyKool software        
    App & Bluetooth    
  • Specification


    • Measurement Range: -1 - 50 bar
    • Overload: 52 bar
    • Accuracy: ±0.5% fs (±1 digit)
    • Resolution: 0.01 bar
    • Connection Pins: 3x7/16“ – UNF + 1 x 5/8'' – UNF


    • Measuring Range: -50 to 150°C
    • Accuracy: 0.5°C (±1 digit)
    • Resolution: 0.1°C
    • Probe Connections: 2 x plug-in (NTC)


    • Measuring Range rel: -1 bar to 0 bar
    • Accuracy: 1% fs
    • Resolution: 1hPa/1mbar/500micron

    Refrigerants in Instrument




    R718 (H2O)

  • Supplied Accessories

    • Testo 557 Digital Manifold (with Bluetooth)
    • 2 x Clamp Probe
    • External Vacuum Probe
    • Batteries
    • Testo 557 Instruction Manual
    • Calibration Protocol
    • Hard Transport Case

    Please Note: Hoses not included

  • Product Documents

    Product Attachments

    View FileTesto Refrigeration Brochure    Size: (6.54 MB)
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