Testo 558s Ultimate Refrigeration Kit
The Testo 558s Ultimate Refrigeration Kit brings together digital measurement, evacuation, charging, electrical testing and leak detection equipment for HVAC/R professionals commissioning and servicing refrigeration and air conditioning systems. Its testo 558s manifold provides a colour touchscreen with clear measurement graphs, while physical keys offer an alternative when working with gloves. Wireless clamp thermometers and a vacuum probe connect to the manifold by Bluetooth, allowing temperature and vacuum readings to be viewed alongside the system’s pressure measurements.
Automatic charging uses the testo 560i scale and refrigerant valve to work towards a selected weight, superheat or subcooling target. Working with the testo 552i probe, the testo 565i pump stops evacuation at the target vacuum and starts a holding test, while the testo 770-3 supports electrical checks and the testo 514 provides refrigerant leak detection. Measurement reports can be exported and sent through the testo Smart App, helping complete documentation on site.
Key Benefits
- Choose touchscreen, physical key or app operation to suit the working conditions
- Review clear measurement graphs to assess system readings on the manifold
- Read wireless temperature and vacuum measurements directly on the manifold
- Control refrigerant charging automatically using a target weight, superheat or subcooling value
- Run evacuation with automatic stopping and a subsequent holding test using the testo 565i and testo 552i
- Access tightly packed cables with the testo 770-3 retractable pincer arm
- Locate refrigerant leaks using the testo 514 flexible probe and selectable numeric or bar graph display
- Export and send measurement reports through the testo Smart App while on site
- Use the manifold’s USB-C rechargeable battery or replaceable AA batteries for flexible power options
Common Applications
The Testo 558s Ultimate Refrigeration Kit is suitable for a range of refrigeration and air conditioning service tasks, including:
- Commissioning refrigeration and air conditioning systems
- Routine refrigeration and air conditioning servicing
- Checking superheat and subcooling
- System tightness testing
- System evacuation and vacuum holding tests
- Automatic refrigerant charging
- Electrical troubleshooting
- Refrigerant leak detection
Why Choose This Model?
This kit suits users who need wireless temperature and vacuum probes and a Bluetooth clamp meter supplied with their manifold. These instruments are optional accessories for the standalone Testo 558s Digital Manifold.
Product Comparison
| Feature |
Testo 558s Ultimate Kit |
Testo 558s Digital Manifold |
| Wireless clamp thermometers |
2 x testo 115i included |
Optional accessories |
| Wireless vacuum probe |
1 x testo 552i included |
Optional accessory |
| Bluetooth clamp meter |
1 x testo 770-3 included |
Optional accessory |
General Specifications
| Specification |
Details |
| testo 558s valve block |
4-way valve block |
| testo 558s display and controls |
Capacitive colour touchscreen, physical keys and testo Smart App |
| testo 558s connections |
3 x 7/16″ – UNF + 1 x 5/8″ – UNF
2 x plug-in (NTC) |
| testo 558s connectivity |
Bluetooth® 5.0
Radio range: 150 m |
| testo 558s refrigerants |
More than 96 stored refrigerants; A3 and A2L compatible |
| testo 558s trend display |
30-minute trend curves |
| testo 558s data export |
CSV, JSON and PDF via testo Smart App |
| testo 770-3 measurement functions |
True RMS, AC/DC voltage and current, resistance, capacitance, frequency, power, continuity, diode and inrush current measurements |
| testo 770-3 safety category |
CAT IV 600 V; CAT III 1000 V |
| testo 565i pump type |
Two-stage rotary vane pump |
| testo 565i flow rate and ultimate vacuum |
7 CFM / 198 l/min
Ultimate vacuum: 15 micron |
| Refrigerant valve maximum working pressure |
35 bar |
| testo 514 detectable refrigerants |
HCFC, HFC, HFO, HCFO, HC (R290), and blends |
| testo 514 detection performance |
Resolution: 1 ppm
Sensitivity: 3 g/a (High); 14 g/a (Low)
Response time: < 2 sec |
| Protection classes |
testo 558s: IP54
testo 552i: IP54
testo 560i: IP44
Refrigerant valve: IP54 |
Measurement and Accuracy Specifications
| Measurement Function |
Range and Resolution |
Accuracy |
| testo 558s pressure |
-1 to 60 bar
Resolution: 0.01 bar |
±0.25 % fs |
| testo 558s temperature (NTC inputs) |
-50 to +150 °C
Resolution: 0.1 °C |
±0.5 °C |
| testo 115i temperature |
-40 to +150 °C
Resolution: 0.1 °C |
±1.3 °C (-20 to +85 °C)
±1 digit |
| testo 552i absolute pressure |
0 to 26.66 mbar / 0 to 20000 microns
Resolution: 1 micron (0 to 1000 microns)
10 micron (1000 to 2000 microns)
100 micron (2000 to 5000 microns) |
±10 microns + 10% of m.v. (100 to 1000 microns)
±1 digit |
| testo 560i refrigerant weight |
0 to 100 kg
Resolution: 0.01 kg |
At +22 °C:
≤ ±(10 g + 0.03 %rdg) (0 to 30 kg)
≤ ±(10 g + 0.05 %rdg) (30 to 100 kg) |
| testo 770-3 AC voltage |
1.0 mV to 1000.0 V
Resolution: max. 1 mV |
± (1 % of mv + 3 Digit) |
Mechanical and General Information
| Specification |
Details |
| testo 558s dimensions and weight |
229 x 112.5 x 71 mm
1.3 kg |
| testo 558s operating and storage temperatures |
Operating: -20 to +50 °C
Storage: -20 to +60 °C |
| testo 558s power supply |
Built-in rechargeable LI battery 18650 (USB-C)
Replaceable batteries: 3 AA alkaline batteries |
| testo 115i dimensions |
183 x 90 x 30 mm |
| testo 552i dimensions and weight |
150 x 32 x 31 mm
142 g |
| testo 560i dimensions |
310 x 287 x 58 mm (LxWxH) |
| Refrigerant valve dimensions and weight |
95 x 119 x 47 mm (LxWxH)
570 g (incl. batteries) |
| testo 565i weight and operating temperature |
12 kg
+5 to +40 °C |
| testo 514 dimensions, probe and weight |
135 x 60 x 28 mm (L x W x H)
Probe length with sensor: 330 mm
296 g |
Specification Notes
- Pressure and NTC temperature accuracy figures for the testo 558s are specified at 22 °C
- 72-hour data logging requires an optional upgrade purchased through the app
What’s Included
- 1 x Testo 558s Digital Manifold
- 2 x Testo 115i Clamp Thermometers
- 1 x Testo 552i Vacuum Probe
- 1 x Testo 770-3 Clamp Meter
- 1 x Testo 560i Refrigerant Scale
- 1 x Testo Refrigerant Valve
- 1 x Testo 565i Vacuum Pump
- 1 x Testo 514 Refrigerant Leak Detector
- 1 x 4-piece hose set
Frequently Asked Questions
Does the kit include a vacuum pump and leak detector?
Yes. The Testo 558s Ultimate Refrigeration Kit includes a testo 565i vacuum pump and a testo 514 refrigerant leak detector.
Can the kit charge refrigerant automatically?
Yes. The supplied Testo 560i refrigerant scale and refrigerant valve support automatic charging according to a target refrigerant weight, superheat or subcooling value.
How does automatic evacuation work?
The testo 565i works with the Testo 552i vacuum probe to monitor evacuation. When the selected vacuum target is reached, the pump stops automatically and a vacuum holding test begins.
Do I need a smartphone to operate the manifold?
No. You can operate the Testo 558s directly using its touchscreen or physical keys, with key operation available when wearing gloves. The Testo Smart App provides another way to control the manifold and export measurement reports.
Is the manifold compatible with A2L and A3 refrigerants?
Yes. Testo confirms that the Testo 558s manifold is compatible with Class A2L and A3 refrigerants.
Is 72-hour data logging included as standard?
No. The manifold provides 30-minute trend curves, while 72-hour data logging requires an optional upgrade purchased through the app.
