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Testo 557 - Digital Manifold Kit

Testo 557
Catalog #: 0563 1557
4.5 of 5
557 Digital Manifold w/BT

Listen to Expert Highlights


  • External vacuum probe for faster and more reliable evacuation of the system
  • Bluetooth / App integration for monitoring, report generation, and sending reports and invoices via email
  • Accurate, simultaneous superheat / sub-cooling measurements
  • Rugged housing with 5 year warranty with registration for reliable testing
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List Price: $535.00
Sale: $454.75
  + Free shipping over $74

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Compare Products in this Series

Product Name Type of Display Availability Price
557 Digital Manifold w/BT
549 Digital Manifold
550 Digital Manifold
570 Digital Manifold Kit
Testo 557

Testo 0563 1557 Digital Manifold Kit

4.5 of 5
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Product Information

Testo 557 - Digital Manifold Kit


The Testo 557 4-valve with 3/8 vacuum port digital manifold comes with a remote vacuum probe for faster and more reliable evacuations, Bluetooth App, two clamp temperature probes for instantaneous superheat / sub-cooling readings, and convenient service case.


Testo 557 - Digital Manifold Kit

  • Built in Vacuum Gauge
  • Robust valve block with 4 connections and built in sight glass
  • 2 temperature probe inputs for simultaneous real-time calculation of superheat and subcooling
  • Readings are displayed within seconds
  • Compact design for ease of use, transport and setup
  • Large, easy to read back-lit display
  • Rugged housing that protects the analyzer
  • 40 refrigerant profiles stored, eliminating the use of PT charts
The Testo 557 digital manifold has a 4-way valve block, large backlit display and sight glass. Two NTC thermistor clamp probes provide superior accuracy of simultaneous, real-time superheat and sub-cooling readings. An external vacuum probe provides fast and more reliable evacuation of the system. The wireless Bluetooth / App allows you to view measurement data on your Smartphone or Tablet, enabling you to quickly and conveniently complete and document your job. Then, be able to finalize the documentation and send the reports and invoice via email, right from the job site. In addition to the 60 refrigerant profiles stored in the instrument, the App can also be used to download new refrigerants from the Internet directly into the digital manifold.
  • Measures high side / low side pressures and temperatures
  • 4-way valve block with 1/4 in. and 3/8 in. ports
  • External vacuum probe
  • App integration via Bluetooth (65 feet range)
  • Calculates and displays Superheat and Sub-cooling temperatures

What's In The Box

  • testo 557 kit
  • digital manifold with Bluetooth / App
  • 2 x NTC temperature clamp probes
  • external vacuum probe
  • batteries
  • case
  • certificate of conformity
  • user's manual


Model: 557 Specifications
Measuring range -58° to 302 °F / -50 to +150 °C
Accuracy ±0.9 °F / ±0.5 °C
Resolution 0.1 °F / 0.1 °C
Probe connection 2 x Plug-in (NTC)
Pressure measurement
Measuring range -14 to 870 psi / -1 to 60 bar
Accuracy ±0.5 % Fs
Resolution 0.10 psi / 0.01 bar
Probe connection 3 x 7/16" – UNF + 1 x 5/8'' – UNF
Overload rel. (high pressure) 943 psi / 65 bar
Measuring range 0 to 20000 micron (measurement)
Accuracy ± (10 micron + 10 % of mv) (100 to 1000 micron)
Resolution 1 micron (0 to 1000 micron) 10 micron (1000 to 2000 micron) 100 micron (2000 to 5000 micron) 500 micron (5000 to 10000 micron) 5000 micron (10000 to 20000 micron)
General technical data
Protection class IP42
Warranty 2 years
Battery life 250 h (without illumination, without Bluetooth®, without vacuum probe)
Pressure media CFC
Refrigerants in instrument R1234ze; update via App; R420A; R508B; R424A; R507; R11; R422A; R404A; Ra11A; R417A; R407B; R22; R422C; R290; R402B; R14; R123; R718 (H₂O); R401B; R134a; R407D; R409A; R412A; R422B; R152A; R401C; R407A; R12; R437A; R407C; R410A; R421B; R1234yf; R407F; R414B; R503; R416A; R422D; R13B1; R508A; R125; R744 (CO₂); R161; R401A; R502; R434A; R402A; R427A; R600a; R23; 60 profiles:; R413A; R32; R600; R438A; R406A; R408A; R142B; R227; R426A; R421A
System requirements requires iOS 7.1 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Storage temperature -4° to 140 °F / -20 to +60 °C
Weight 42 oz. / 1200 g
Dimensions 9 x 5 x 3 in. / 220 x 125 x 70 mm
Operating temperature -4° to 122 °F / -20 to +50 °C
  Testo 549 Testo 550 Testo 557 Testo 570
2 channel pressure HP/LP -14.7 to 870 psi -14.7 to 870 psi -14.7 to 870 psi -14.7 to 725 psi
2 channel temperature
Superheat and sub-cooling With optional temperature probes
Manifold block 2 valve 2 valve 4 valve 4 valve
Data logging / Printing   Via app Via app
Refrigerant update by customer   Online via App Online via App Via USB

Testo 557 Product Specifications Summary:
(for full specs please see the full specs tab or the data sheet)

HVAC Equipment and Instruments/Manifolds and Gauges Template

Type of DisplayDigital

Test Equipment General Attributes

Country of OriginChina



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Testo 557 Customer Reviews

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Average Customer Review
4.5 of 5
3 customer reviews
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Product: Testo 557
Rosemary Hatfield
Recommended: Yes
TEquipment.NET Verified Purchase


Product surpassed our needs. The pricing was the best available, about $50 less than other suppliers. Had the product within two days of shipping! Thanks for the quick turn around!! Will order more of my HVAC needs from here!!
0 out of 0 found this review helpful. Did this help? Yes No
Product: Testo 557
Location: Lockport Il Usa
Recommended: Yes

Looks nice

I just received it and can't use it until a/c season starts but I'm sure it will work fine other tools I have from testo all have impressed me so I see no reason why this one will be any different
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Product: Testo 557
David Wilson
Recommended: Yes
TEquipment.NET Verified Purchase

A/C Manifold

I was looking for high end manifold set mainly to impress the client but really found that i was the one impressed. A little tricky to get used to at first but this set will do everything a field tech needs along with impressing the client.
0 out of 1 found this review helpful. Did this help? Yes No
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