Vaillant
Vaillant Heat Exchanger 0020238987
Heat exchanger for Vaillant EcoTEC Sustain 34 VUW 346/7-2 combi boilers, part number 0020238987.
At a glance
- Also known as 1388414
£83.92
£69.93 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 0020238987 is a heat exchanger for the Vaillant EcoTEC Sustain 34 combi boiler family. It transfers heat from combustion into the domestic hot water and central heating circuit inside the appliance. It is listed for the VUW 346/7-2 model range.
Signs this part needs replacing
- Reduced hot water output or water running lukewarm at the tap
- Boiler locking out or showing a heat-related fault code
- Visible leaks, weeping or staining around the heat exchanger
- Kettling, banging or gurgling noises from the appliance
- Discoloured or soot-marked surfaces on the exchanger
Before you order
- Confirm the appliance model and GC number against the boiler data badge
- Check the part number on the existing component where it is visible
- Identify whether the boiler is the 2017 or 2021 revision of the VUW 346/7-2
- Confirm the fault lies with the heat exchanger before ordering
Compliance
| Alternative numbers | 1388414 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VUW 346/7-2 | 47-044-81 | 47-044-81 | — | — |
| VAILLANT ecoTEC SUSTAIN 34 VUW 346/7-2 (2017) | 47-044-81 | 47-044-81 | — | — |
| VAILLANT ecoTEC SUSTAIN 34 VUW 346/7-2 R1 (2021) | 47-044-81 | 47-044-81 | — | — |
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.
No technical questions yet for this part.
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