Baxi
Baxi DHW Cartridge 12 L Part No 7812535
Domestic hot water cartridge, 12 L, for Baxi 430, 630, 830 and Assure 530 Combi 2 boilers.
At a glance
- Also known as 1794956
£62.05
£51.71 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 Baxi DHW cartridge 12 L is a domestic hot water control component used in Baxi Combi 2 and Assure Combi 2 appliances. It regulates the flow of water through the DHW circuit, allowing the boiler to deliver hot water on demand at the correct rate. The 12 L designation identifies the flow variant, and this part is specified for 30 kW models.
Signs this part needs replacing
- Domestic hot water runs cold or only lukewarm while the heating circuit works normally
- Hot water temperature fluctuates or cycles during draw-off
- Reduced hot water flow rate at the taps
- Water weeping or dripping from the cartridge area
- Boiler fails to switch to DHW mode when a hot tap is opened
Before you order
- Confirm your appliance model and variant against the fit list above
- Check the part number on the existing cartridge matches 7812535
- Verify the appliance is a 30 kW model, as the 12 L cartridge is specified for this output
- Confirm whether your model uses a front facing analogue or internal FIT pressure gauge variant
Compliance
| Alternative numbers | 1794956 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI 430 COMBI 2 | 47-077-52 | 47-077-52 | — | — |
| BAXI 430 COMBI 2 LPG | 47-077-54 | 47-077-54 | — | — |
| BAXI 430 ERP COMBI 2.1 | 47-077-75 | 47-077-75 | — | — |
| BAXI 430 LPG COMBI 2 | 47-077-54 | 47-077-54 | — | — |
| BAXI 630 COMBI 2 - FRONT FACING ANALOGUE PRESSURE GAUGE | 47-077-56 | 47-077-56 | — | — |
| BAXI 630 COMBI 2 - INTERNAL FIT PRESSURE GAUGE | 47-077-56 | 47-077-56 | — | — |
| BAXI 830 COMBI 2 | 47-077-64 | 47-077-64 | — | — |
| BAXI 830 COMBI 2 - FRONT FACING ANALOGUE PRESSURE GAUGE | 47-077-64 | 47-077-64 | — | — |
| BAXI ASSURE 530 COMBI 2 - FRONT FACING ANALOGUE PRESSURE GAUGE | 47-077-60 | 47-077-60 | — | — |
| BAXI ASSURE 530 COMBI 2 - INTERNAL FIT PRESSURE GAUGE | 47-077-60 | 47-077-60 | — | — |
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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