Ariston
Ariston Main Heat Exchanger 998139
Main heat exchanger 998139 for Ariston gas boilers, transferring heat from combustion gases to the heating and hot water circuit.
At a glance
- Also known as 1576998
Showing prices
£343.02
£285.85 ex. VAT · VAT at 20%
Available to order · 3 working days
Available to order · 3 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
The Ariston 998139 is a main heat exchanger for Ariston gas boilers. It transfers heat from the combustion gases to the heating and hot water circuit. This part is listed for the Ariston Eurocombi A27 MFFI UK and a range of other Ariston boiler models.
Signs this part needs replacing
- Water leaking from the heat exchanger body or connections
- Repeated loss of system pressure with no visible external leak
- Overheating or boiler lockout during heating or hot water demand
- Kettling, banging or rumbling noises from the heat exchanger
- Visible corrosion, scale or debris blocking the heat exchanger waterways
Before you order
- Confirm the boiler model and serial number against the fitment list.
- Check the GC number where shown for your appliance.
- Verify the part number 998139 matches the existing component.
- Confirm whether the boiler is NG or LPG and the edition where applicable.
Compliance
| Barcode / EAN | 5411692267308 |
|---|---|
| Alternative numbers | 1576998 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ARISTON ARISTON EUROCOMBI A27 MFFI UK - FROM SERIAL No 2320015700001 | — | — | — | |
| ARISTON ARISTON GENUS 23 MFFI UK - FROM SERIAL No 2320004900093 | — | — | — | |
| ARISTON ARISTON GENUS 27 MFFI UK - FROM SERIAL No 2320004900093 | — | — | — | |
| ARISTON ARISTON GENUS 27 RFFI SYSTEM - FROM SERIAL No 2320007700003 | — | — | — | |
| ARISTON ARISTON GENUS 30 MFFI UK - FROM SERIAL No 2320004900093 | — | — | — | |
| ARISTON ARISTON GENUS 30 MFFI UK FROM SERIAL No 2320015700001 TO SERIAL No 2320004900093 | — | — | — | |
| ARISTON DIA 20 MFFI CE UK LPG | 47-116-03 | 47-116-03 | — | — |
| ARISTON DIA 20 MFFI CE UK MET | 47-116-03 | 47-116-03 | — | — |
| ARISTON DIA 24 MI CE UK LPG | — | — | — | |
| ARISTON DIA 24 MI CE UK MET | — | — | — |
Showing 10 of 30 compatible appliances.
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
ARISTON appliance manual — DIA 20 MFFI CE UK LPG (GC 47-116-03), DIA 20 MFFI CE UK MET (GC 47-116-03)
manualmanualARISTON appliance manual — DIA 24 MI CE UK LPG, DIA 24 MI CE UK MET
manualmanualARISTON appliance manual — DIA SYSTEM 27 RFFI LPG, DIA SYSTEM 27 RFFI MET (GC 41-116-02)
manualmanualARISTON appliance manual — EUROCOMBI A27 MFFI LPG UK EDITION 1 (OCT 2007) (GC 47-116-12), EUROCOMBI A27 MFFI NG UK EDITION 1 (OCT 2007) (GC 47-116-12)
manualmanualARISTON appliance manual — GENUS 27 MFFI UK EDITION 1 LPG (JUN 1998) (GC 47-116-09), GENUS 27 MFFI UK EDITION 1 NG (JUN 1998) (GC 47-116-09), GENUS 27 MFFI UK EDITION 2 LPG (JAN 1999) (GC 47-116-09), GENUS 27 MFFI UK EDITION 2 NG (JAN 1999) (GC 47-116-09), GENUS 27 MFFI UK EDITION 3 LPG (SEPT 2000) (GC 47-116-09), GENUS 27 MFFI UK EDITION 3 NG (SEPT 2000) (GC 47-116-09), GENUS 27 RFFI TANK LPG EDITION 1 (JUN 1998) (GC 41-116-01), GENUS 27 RFFI TANK LPG EDITION 2 (JAN 1999) (GC 41-116-01), GENUS 27 RFFI TANK LPG EDITION 3 (NOV 2000) (GC 41-116-01), GENUS 27 RFFI TANK NG EDITION 1 (JUN 1998) (GC 41-116-01), GENUS 27 RFFI TANK NG EDITION 2 (JAN 1999) (GC 41-116-01), GENUS 27 RFFI TANK NG EDITION 3 (NOV 2000) (GC 41-116-01), GENUS 30 MFFI UK LPG EDITION 2 (JUL 2000) (GC 47-116-13), GENUS 30 MFFI UK LPG EDITION 3 (OCT 2000) (GC 47-116-13), GENUS 30 MFFI UK NG EDITION 2 (JUL 2000) (GC 47-116-13), GENUS 30 MFFI UK NG EDITION 3 (OCT 2000) (GC 47-116-13)
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