Ariston
Ariston Microgenus/Microsystem main heat exchanger 998893
Genuine Ariston main heat exchanger, part number 998893, for Microgenus and Microsystem boilers.
At a glance
- Part type: Main heat exchanger
- Also known as 1577394
- Have the work carried out by a Gas Safe registered engineer
Showing prices
£416.52
£347.10 ex. VAT · VAT at 20%
Available to order · 7 working days
Available to order · 7 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
This is Ariston's main heat exchanger, part number 998893. It transfers heat from the burner into the water circulating through the boiler's central heating and hot water circuits.
Signs this part needs replacing
- Boiler kettling or making unusual banging/rumbling noises
- Reduced heat output despite the burner firing normally
- Signs of corrosion, scale or leaking around the exchanger
- Boiler locking out on an overheat or flow fault
Before you order
- Confirm the part number printed on your existing heat exchanger matches 998893
- Check your exact boiler model, edition and GC number against the fitment list above
- Isolate power, gas and water before removal
- Have the work carried out by a Gas Safe registered engineer
Compliance
| Barcode / EAN | 5411692303587 |
|---|---|
| Alternative numbers | 1577394 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ARISTON ARISTON MICROGENUS 27 MFFI - FROM SERIAL No 2320005600001 TO SERIAL No 2320021400002 | — | — | — | |
| ARISTON ARISTON MICROGENUS 27 MFFI - FROM SERIAL No 2320021400002 | — | — | — | |
| ARISTON ARISTON MICROGENUS 27 MMFI - LPG - FROM SERIAL No 2319932400027 TO SERIAL No 2320005600001 | — | — | — | |
| ARISTON ARISTON MICROGENUS 27 MMFI - NG - FROM SERIAL No 2319932500011 TO SERIAL No 2320005600001 | — | — | — | |
| ARISTON ARISTON MICROSYSTEM 28 RFFI - FROM SERIAL No 2320021100001 TO SERIAL No 2320030800001 | — | — | — | |
| ARISTON MICROGENUS 27 MFFI (CMP2) LPG EDITION 4 (SEPT 2002) | — | — | — | |
| ARISTON MICROGENUS 27 MFFI (CMP2) NG EDITION 4 (SEPT 2002) | — | — | — | |
| ARISTON MICROGENUS 27 MFFI LPG EDITION 1 (DEC 1999) | 47-116-15 | 47-116-15 | — | — |
| ARISTON MICROGENUS 27 MFFI LPG EDITION 2 (APR 2000) | 47-116-15 | 47-116-15 | — | — |
| ARISTON MICROGENUS 27 MFFI LPG EDITION 3 (DEC 2000) | 47-116-15 | 47-116-15 | — | — |
Showing 10 of 21 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 — MICROGENUS 27 MFFI LPG EDITION 1 (DEC 1999) (GC 47-116-15), MICROGENUS 27 MFFI LPG EDITION 2 (APR 2000) (GC 47-116-15), MICROGENUS 27 MFFI LPG EDITION 3 (DEC 2000) (GC 47-116-15), MICROGENUS 27 MFFI LPG EDITION 5 (MAR 2004) (GC 47-116-15), MICROGENUS 27 MFFI NG EDITION 1 (DEC 1999) (GC 47-116-15), MICROGENUS 27 MFFI NG EDITION 2 (APR 2000) (GC 47-116-15), MICROGENUS 27 MFFI NG EDITION 3 (DEC 2000) (GC 47-116-15), MICROGENUS 27 MFFI NG EDITION 5 (MAR 2004) (GC 47-116-15)
manualmanualARISTON appliance manual — MICROSYSTEM 28 RFFI LPG EDITION 1 (AUG 2000) (GC 41-116-07), MICROSYSTEM 28 RFFI LPG EDITION 2 (JAN 2004) (GC 41-116-07), MICROSYSTEM 28 RFFI LPG EDITION 3 (SEPT 2004) (GC 41-116-07), MICROSYSTEM 28 RFFI NG EDITION 1 (AUG 2000) (GC 41-116-07), MICROSYSTEM 28 RFFI NG EDITION 2 (JAN 2004) (GC 41-116-07), MICROSYSTEM 28 RFFI NG EDITION 3 (SEPT 2004) (GC 41-116-07)
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