Ariston
Ariston Sanitary Heat Exchanger 12 P. 65116314
Sanitary heat exchanger, designated 12 P., for selected Ariston Cares ONE and CLAS ONE combi boilers.
At a glance
- Also known as 8903816
£69.08
£57.57 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 Ariston 65116314 is a sanitary heat exchanger, listed by the manufacturer under the 12 P. designation. It transfers heat from the primary circuit to the domestic hot water supply in the combi boilers listed below. It is a serviceable component and is replaced as a complete unit.
Signs this part needs replacing
- Domestic hot water runs hot then cold, or the temperature fluctuates at the tap
- Reduced hot water flow rate, often worse in hard water areas
- Water weeping or staining around the plate stack or its connections
- Primary circuit pressure rising when the boiler is on hot water, indicating a breach between circuits
- Cold water at the hot tap while the heating circuit continues to work normally
Before you order
- Confirm the boiler model against the fitment list above
- Check the part number on the existing component or in the manufacturer's parts list for your appliance
- Confirm the 12 P. designation matches the unit fitted to your boiler
- Isolate the appliance, drain the relevant circuits and follow the manufacturer's instructions for removal and refitting
Compliance
| Alternative numbers | 8903816 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ARISTON CARES ONE 24 | 47-116-79 | 47-116-79 | — | — |
| ARISTON CARES ONE 30 | 47-116-80 | 47-116-80 | — | — |
| ARISTON CLAS NET ONE 24 UK | 47-116-88 | 47-116-88 | — | — |
| ARISTON CLAS NET ONE 30 UK | 47-116-89 | 47-116-89 | — | — |
| ARISTON CLAS ONE 24 UK | 47-116-85 | 47-116-85 | — | — |
| ARISTON CLAS ONE 30 UK | 47-116-86 | 47-116-86 | — | — |
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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