Vaillant
Vaillant ecoTEC Plus 612/615/618/824 heat exchanger 103409
Heat exchanger for the Vaillant ecoTEC Plus 612, 615, 618 and 824 (2005) boiler range.
At a glance
- Also known as 1375304
- Have the replacement fitted by a Gas Safe registered engineer
£805.67
£671.39 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 103409 is the heat exchanger fitted to Vaillant's early ecoTEC Plus 612, 615, 618 and 824 boilers and the related VU/VUW 126-246/3-5 range. It transfers the heat produced by the burner into the water circulating through the appliance.
Signs this part needs replacing
- Water leaking from around the heat exchanger
- Reduced or fluctuating hot water/heating output
- Kettling or banging noises when the boiler fires
- Lockouts linked to overheat or flow sensors
Before you order
- Confirm your exact model and production year against the fits list
- Match the part number printed on your existing heat exchanger
- Isolate gas, electricity and water before removal
- Have the replacement fitted by a Gas Safe registered engineer
Compliance
| Barcode / EAN | 4024074479933 |
|---|---|
| Alternative numbers | 1375304 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VAILLANT ECOTEC PLUS 612 VU 126-3-5 | — | — | — | |
| VAILLANT VAILLANT ECOTEC PLUS 615 VU 156-3-5 | — | — | — | |
| VAILLANT VAILLANT ECOTEC PLUS 618 VU 186-3-5 | — | — | — | |
| VAILLANT VAILLANT ECOTEC PLUS 824 - VUW 246/3-5 | — | — | — | |
| VAILLANT VU 126/3-5 | 41-044-44 | 41-044-44 | — | — |
| VAILLANT VU 156/3-5 | 41-044-45 | 41-044-45 | — | — |
| VAILLANT VU 186/3-5 | 41-044-46 | 41-044-46 | — | — |
| VAILLANT VUW 246/3-5 | 47-044-31 | 47-044-31 | — | — |
| VAILLANT ecoTEC PLUS 612 VU 126/3-5 (2005-2005) | 41-044-44 | 41-044-44 | — | — |
| VAILLANT ecoTEC PLUS 615 VU 156/3-5 (2005-2005) | 41-044-45 | 41-044-45 | — | — |
Showing 10 of 12 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.
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