Vaillant
Vaillant main heat exchanger 0020209548
Genuine Vaillant main heat exchanger, part number 0020209548, for the ecoTEC Plus VUW 637, 837, 838 and VUI 937, 938 boilers.
At a glance
- Also known as 1388016
- This is gas-related work and must be carried out by a Gas Safe registered engineer
£1,179.94
£983.28 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
This is the main heat exchanger supplied by Vaillant as a genuine spare for its ecoTEC Plus VUW 637, 837, 838 and VUI 937, 938 boilers, part number 0020209548; it transfers heat from the burner to the central heating and hot water circuits.
Signs this part needs replacing
- Reduced heating or hot water output
- Water leaking from the heat exchanger
- Kettling or unusual noise from the boiler during firing
- Boiler locks out on a high-limit or flow-temperature fault
Before you order
- Match your exact appliance code against the model list above
- Isolate the gas, water and electrical supplies before removing the old heat exchanger
- This is gas-related work and must be carried out by a Gas Safe registered engineer
Compliance
| Alternative numbers | 1388016 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VU 376/5-5 A R4 | 41-044-85 | 41-044-85 | — | — |
| VAILLANT VU 376/5-5 R4 | 41-044-65 | 41-044-65 | — | — |
| VAILLANT VUI 376/5-5 R4 | 47-044-43 | 47-044-43 | — | — |
| VAILLANT VUI 386/5-5 A R4 | — | — | — | |
| VAILLANT VUW 376/5-5 R4 | 47-044-42 | 47-044-42 | — | — |
| VAILLANT VUW 386/5-5 R4 | 47-044-60 | 47-044-60 | — | — |
| VAILLANT ecoTEC PLUS 637 VU 376/5-5 A R4 | — | — | — | |
| VAILLANT ecoTEC PLUS 637 VU 376/5-5 A R4 (2015) | 41-044-85 | 41-044-85 | — | — |
| VAILLANT ecoTEC PLUS 637 VU 376/5-5 R4 (2014-2015) | 41-044-65 | 41-044-65 | — | — |
| VAILLANT ecoTEC PLUS 637 VU 376/5-5 R4 (41-044-65) | — | — | — |
Showing 10 of 17 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 — VU 376/5-5 A R4 (GC 41-044-85), VUW 386/5-5 R4 (GC 47-044-60), ecoTEC PLUS 637 VU 376/5-5 A R4 (2015) (GC 41-044-85), ecoTEC PLUS 838 VUW 386/5-5 R4 (2015) (GC 47-044-60)
manualmanualVAILLANT appliance manual — VU 376/5-5 R4 (GC 41-044-65), VUW 376/5-5 R4 (GC 47-044-42), ecoTEC PLUS 637 VU 376/5-5 R4 (2014-2015) (GC 41-044-65), ecoTEC PLUS 837 VUW 376/5-5 R4 (2015-2015) (GC 47-044-42)
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