Vaillant
Vaillant Heat Exchanger 0020233504
Vaillant heat exchanger 0020233504 for ecoTEC Exclusive 843 and VUW 436/5-7 appliances, transferring heat to the heating and hot water circuits.
At a glance
- Appliance family: ecoTEC Exclusive 843 / VUW 436/5-7
- Also known as 1388260
£1,128.70
£940.58 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 0020233504 is a heat exchanger used in Vaillant ecoTEC Exclusive 843 VUW 436/5-7 appliances. It transfers heat from the combustion circuit into the domestic hot water and heating water circuits. It is a serviceable component within the appliance's hydraulic assembly.
Signs this part needs replacing
- Domestic hot water temperature that fluctuates or fails to reach the set point
- Water leaking from the heat exchanger body or its connections
- Kettling, banging or rumbling noises during heating or hot water draw-off
- Reduced hot water flow rate or inconsistent output at the tap
- Scale or debris build-up restricting flow through the exchanger
Before you order
- Confirm the appliance model and GC number against the fitment list above
- Check the existing part number on the component before removal
- Inspect seals, O-rings and connections for condition, as these are not supplied with the exchanger
- Verify the fault is traced to the heat exchanger rather than the diverter valve, pump or sensor circuit
Compliance
| Alternative numbers | 1388260 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VUW 436/5-7 | 47-044-67 | 47-044-67 | — | — |
| VAILLANT ecoTEC EXCLUSIVE 843 VUW 436/5-7 (2016) | 47-044-67 | 47-044-67 | — | — |
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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