Vaillant
Vaillant heat exchanger 0020246711
Genuine Vaillant heat exchanger for the Ecotec Plus 624/832 and Sustain 34 boilers.
At a glance
- Also known as 1388526
- Fitting should be carried out by a Gas Safe registered engineer
Showing prices
£596.03
£496.69 ex. VAT · VAT at 20%
Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
A genuine Vaillant heat exchanger, part number 0020246711, GC No. 47-044-81. It transfers heat from the burner into the water circulating through the boiler.
Signs this part needs replacing
- Reduced heat output or lukewarm radiators/hot water
- Boiler locks out on an overheat or flow fault
- Kettling or banging noises from the boiler
- Visible leaks or scale build-up around the heat exchanger
Before you order
- Match the part number and GC number on your existing exchanger before ordering
- Isolate the water and electrical supply before removing the old exchanger
- Fitting should be carried out by a Gas Safe registered engineer
Compliance
| Alternative numbers | 1388526 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VU 246/5-5 R6 | 41-694-24 | 41-694-24 | — | — |
| VAILLANT VUW 246/5-5 R6 | 47-044-84 | 47-044-84 | — | — |
| VAILLANT VUW 246/5-5 R6 LPG | 47-044-85 | 47-044-85 | — | — |
| VAILLANT VUW 346/7-2 | 47-044-81 | 47-044-81 | — | — |
| VAILLANT ecoTEC PLUS 624 VU 246/5-5 R6 (2017) | 41-694-24 | 41-694-24 | — | — |
| VAILLANT ecoTEC PLUS 832 VUW 246/5-5 R6 (2017) | 47-044-84 | 47-044-84 | — | — |
| VAILLANT ecoTEC PLUS 832 VUW 246/5-5 R6 LPG (2017) | 47-044-85 | 47-044-85 | — | — |
| 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 | — | — |
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
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.
manual
VAILLANT appliance manual — VU 246/5-5 R6 (GC 41-694-24), VUW 246/5-5 R6 (GC 47-044-84), VUW 246/5-5 R6 LPG (GC 47-044-85), ecoTEC PLUS 624 VU 246/5-5 R6 (2017) (GC 41-694-24), ecoTEC PLUS 832 VUW 246/5-5 R6 (2017) (GC 47-044-84), ecoTEC PLUS 832 VUW 246/5-5 R6 LPG (2017) (GC 47-044-85)
manualmanualVAILLANT appliance manual — VUW 346/7-2 (GC 47-044-81), ecoTEC SUSTAIN 34 VUW 346/7-2 (2017) (GC 47-044-81)
manualNo technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.