
Viessmann
Viessmann Heat Exchanger Vitodens 100 Compact 26KW 7831342
Viessmann heat exchanger 7831342 for Vitodens 100W Compact boilers rated 13kW to 26kW.
At a glance
- Appliance family: Vitodens 100W Compact
- Also known as 2321094
£1,193.76
£994.80 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 Viessmann heat exchanger listed under part number 7831342 for the Vitodens 100W Compact boiler range. It transfers heat from the combustion circuit into the heating and hot water water circuit, and is classed as a gas boiler spare within the heat exchanger category. The 26KW figure in the product name identifies the rating the part is listed against.
Signs this part needs replacing
- A leak from the heat exchanger body or its connections
- Kettling, banging or gurgling noises from the boiler during operation
- Reduced heating or hot water output despite the boiler firing
- Repeated overheating or overheat lockouts traced to restricted flow through the exchanger
- Scale or corrosion debris found in the water circuit around the exchanger
Before you order
- Confirm the boiler model and serial number against the fits list, as the part is listed against specific serial numbers in the Vitodens 100W Compact range
- Check the boiler's rating matches the kW figure the exchanger is listed for
- Verify the existing part number on the boiler or its documentation before ordering
- Confirm the fault has been traced to the heat exchanger rather than another component in the water or combustion circuit
Compliance
| Alternative numbers | 2321094 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VIESSMANN VITODENS 100W COMPACT 13KW SERIAL No. 7416307 | 41-819-21 | 41-819-21 | — | — |
| VIESSMANN VITODENS 100W COMPACT 16KW SERIAL No. 7416302 | 41-819-22 | 41-819-22 | — | — |
| VIESSMANN VITODENS 100W COMPACT 19KW SERIAL No. 7416303 | 41-819-23 | 41-819-23 | — | — |
| VIESSMANN VITODENS 100W COMPACT 26KW SERIAL No. 7416304 | 41-819-24 | 41-819-24 | — | — |
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 documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No 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.
