Vaillant
Vaillant Thermo-Hydrometer 101558
Vaillant thermo-hydrometer gauge, part 101558, for Thermocompact, Turbomax and Thermo Compact gas boilers.
At a glance
- Part type: thermo-hydrometer gauge
- Also known as THERMO-HYDROMETER, 1373430
£84.55
£70.46 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Vaillant 101558 is a thermo-hydrometer gauge used on Vaillant gas boilers. It provides a combined temperature and pressure reading at the appliance, allowing the heating engineer to monitor system conditions during service and commissioning. It is listed under thermostats and gas boiler spares for the Thermocompact, Turbomax and Thermo Compact families.
Signs this part needs replacing
- The gauge needle no longer moves in response to changes in system temperature or pressure.
- The pressure or temperature reading is visibly inaccurate compared with a known-good reference.
- The dial face is clouded, cracked or the pointer has dropped off its spindle.
- Water is weeping or dripping from the gauge body or its connection to the appliance.
- The gauge reads a fixed value regardless of boiler operation.
Before you order
- Check the appliance model and GC number on the data plate against the fit list above.
- Confirm the existing gauge is marked with part number 101558, or that the manufacturer's parts list for your model specifies it.
- Inspect the gauge connection and surrounding pipework for corrosion or damage before fitting.
- Confirm whether any sealing washer or connection component is required separately, as these are not stated for this part.
Compliance
| GC number | 283-741 |
|---|---|
| Barcode / EAN | 4024074120750 |
| Alternative numbers | THERMO-HYDROMETER, 1373430 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT THERMOcompact VU 142/1E (1998-2000) | 41-044-16 | 41-044-16 | — | — |
| VAILLANT THERMOcompact VU 242/2E (1988-2000) | — | — | — | |
| VAILLANT THERMOcompact VU 282/3E (1998-2000) | — | — | — | |
| VAILLANT THERMOcompact VU GB 142/1 E (1998-2000) | 41-044-16 | 41-044-16 | — | — |
| VAILLANT THERMOcompact VU GB 182/1E (1998-2000) | 41-044-13 | 41-044-13 | — | — |
| VAILLANT THERMOcompact VU GB 182E (1995-1998) | 41-044-13 | 41-044-13 | — | — |
| VAILLANT THERMOcompact VU GB 242/1E (1998-2000) | 41-044-18 | 41-044-18 | — | — |
| VAILLANT THERMOcompact VU GB 242E (1995-1998) | 41-044-14 | 41-044-14 | — | — |
| VAILLANT THERMOcompact VU GB 282/1E (1998-2000) | 41-044-19 | 41-044-19 | — | — |
| VAILLANT THERMOcompact VU GB 282E (1995-1998) | 41-044-15 | 41-044-15 | — | — |
Showing 10 of 41 compatible appliances.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
VAILLANT appliance manual — THERMOcompact VU 142/1E (1998-2000) (GC 41-044-16), THERMOcompact VU GB 142/1 E (1998-2000) (GC 41-044-16), THERMOcompact VU GB 182/1E (1998-2000) (GC 41-044-13), THERMOcompact VU GB 242/1E (1998-2000) (GC 41-044-18), THERMOcompact VU GB 282/1E (1998-2000) (GC 41-044-19), VU 142/1 E (GC 41-044-16), VU 182/1 E (GC 41-044-13), VU 242/1 E (GC 41-044-18), VU 282/1 E (GC 41-044-19)
manualmanualVAILLANT appliance manual — TURBOmax VUW 242/1E (1998-2000) (GC 47-044-02), TURBOmax VUW 282/1E (1998-2000) (GC 47-044-06), VUW 242/1 E (GC 47-044-02), VUW 282/1 E (GC 47-044-06)
manualmanualVAILLANT appliance manual — TURBOmax VUW 242E (1995-1998) (GC 47-044-25), TURBOmax VUW 282E (1995-1998) (GC 47-044-26), VUW 242 E (GC 47-044-25), VUW 282 E (GC 47-044-26)
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