Vaillant
Vaillant Heat Exchanger DHW 14 Plates 0020231139
14-plate domestic hot water heat exchanger for Vaillant Ecofit PURE 830 and Ecofit Sustain 830 VUW 306/6-3 boilers.
At a glance
- Also known as 1388204
£97.67
£81.39 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 Vaillant 0020231139 is a 14-plate domestic hot water (DHW) heat exchanger used in Vaillant gas boilers. It transfers heat from the primary circuit to the domestic hot water supply, heating mains water on demand. This is the plate pack specified for the Ecofit PURE 830 and Ecofit Sustain 830 VUW 306/6-3 models.
Signs this part needs replacing
- Hot water runs cold or fluctuates in temperature during draw-off
- Reduced hot water flow rate at the taps compared with normal operation
- Limescale or debris blocking the plate channels, causing poor heat transfer
- Water weeping from the plate pack or at the connections
- DHW temperature sensor readings inconsistent with actual tap temperature
Before you order
- Confirm your boiler model and GC number against the fit list above
- Check the existing heat exchanger plate count matches 14 plates
- Inspect the connections and seals for damage before fitting
- Verify the fault is with the heat exchanger and not the diverter valve or sensor
Compliance
| Alternative numbers | 1388204 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT ecoFIT PURE 830 - VUW 306/6-3 (2016) | 47-044-74 | 47-044-74 | — | — |
| VAILLANT ecoFIT SUSTAIN 830 - VUW 306/6-3 (2016) | 47-044-72 | 47-044-72 | — | — |
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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