Vaillant
Vaillant Heat Exchanger 0020210691
Vaillant heat exchanger 0020210691 for VWF and Flexotherm VWF appliances, transferring heat between the heating circuit and domestic hot water.
At a glance
- Appliance family: VWF and Flexotherm VWF
- Also known as 1386752
£894.17
£745.14 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 0020210691 is a heat exchanger used in Vaillant VWF and Flexotherm VWF appliances. It transfers heat between the primary heating circuit and the domestic hot water or buffer circuit within the unit. It is a serviceable component and is replaced as a complete assembly.
Signs this part needs replacing
- Reduced heating or hot water output despite the appliance running
- Water or weep marks around the heat exchanger body or its connections
- Kettling, gurgling or banging noises from the appliance during operation
- Scale or sludge build-up restricting flow through the exchanger
- Repeated fault codes or lockouts linked to heat transfer or flow
Before you order
- Confirm the appliance model and variant against the fitment list above
- Check the existing part number on the component matches 0020210691
- Inspect the surrounding pipework, seals and connections for damage before refitting
- Verify the appliance is isolated and drained before removal of the old exchanger
Compliance
| Alternative numbers | 1386752 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VWF 157/4 | — | — | — | |
| VAILLANT VWF 197/4 | — | — | — | |
| VAILLANT VWF 57/4 230V | — | — | — | |
| VAILLANT VWF 87/4 230V | — | — | — | |
| VAILLANT flexoTHERM VWF 157/4 | — | — | — | |
| VAILLANT flexoTHERM VWF 197/4 | — | — | — | |
| VAILLANT flexoTHERM VWF 57/4 230V | — | — | — | |
| VAILLANT flexoTHERM VWF 87/4 230V | — | — | — |
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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