Baxi
Baxi secondary heat exchanger 4E 5122147
Genuine Baxi 4-element secondary heat exchanger fitted across the Duo-Tec, Gold, Heatmax, Megaflo, Platinum, Promax and Titanium combi boiler ranges.
At a glance
- Also known as BAXI5122147, HEAT-EXCHANGER---4-ELEMENT, 1118384
- Fitting should be carried out by a Gas Safe registered engineer
Showing prices
£624.22
£520.18 ex. VAT · VAT at 20%
In stock
Cut-off passed — dispatches next working day
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
A genuine Baxi secondary heat exchanger, part number 5122147, 4-element (4E) type. In a combination boiler it transfers heat between the two closed water circuits, allowing domestic hot water to be heated on demand.
Signs this part needs replacing
- Hot water runs lukewarm or cold while central heating works normally
- Boiler locks out on a flow or temperature fault when hot water is demanded
- Reduced hot water flow rate at the taps
- Kettling or banging noise when hot water is drawn
Before you order
- Match the part number on your existing exchanger before ordering
- Isolate the water and electrical supply before removing the old exchanger
- Fitting should be carried out by a Gas Safe registered engineer
Compliance
| GC number | H59-210 |
|---|---|
| Barcode / EAN | 5039177691327 |
| Alternative numbers | 7625872076972, BAXI5122147, BAXI5122147, HEAT-EXCHANGER---4-ELEMENT, 1118384 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI DUO-TEC 24 COMBI ErP FROM SERIAL No. PSR16 - ENDING BC | 47-075-96 | 47-075-96 | — | — |
| BAXI DUO-TEC 24 COMBI ErP SERIAL No. ENDING AC | 47-075-96 | 47-075-96 | — | — |
| BAXI DUO-TEC 28 COMBI ErP FROM SERIAL No. PSS16 - ENDING BC | 47-075-97 | 47-075-97 | — | — |
| BAXI DUO-TEC 28 COMBI ErP SERIAL No. ENDING AC | 47-075-97 | 47-075-97 | — | — |
| BAXI DUO-TEC 28 HE LPG | 47-075-39 | 47-075-39 | — | — |
| BAXI DUO-TEC 28 LPG COMBI ErP FROM SERIAL No. PSW16 - ENDING BC | 47-075-98 | 47-075-98 | — | — |
| BAXI DUO-TEC 28 LPG COMBI ErP SERIAL No. ENDING AC | 47-075-98 | 47-075-98 | — | — |
| BAXI DUO-TEC COMBI 24 HE A (AFTER SERIAL No. BTG 0815) | 47-075-35 | 47-075-35 | — | — |
| BAXI DUO-TEC COMBI 28 HE A (AFTER SERIAL No. CAC 0929) | 47-075-36 | 47-075-36 | — | — |
| BAXI MEGAFLO 15 HE A SYSTEM | 41-075-55 | 41-075-55 | — | — |
Showing 10 of 113 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
BAXI appliance manual — DUO-TEC 24 COMBI ErP FROM SERIAL No. PSR16 - ENDING BC (GC 47-075-96), DUO-TEC 28 COMBI ErP FROM SERIAL No. PSS16 - ENDING BC (GC 47-075-97), DUO-TEC 28 LPG COMBI ErP FROM SERIAL No. PSW16 - ENDING BC (GC 47-075-98)
manualmanualBAXI appliance manual — DUO-TEC 24 COMBI ErP SERIAL No. ENDING AC (GC 47-075-96), DUO-TEC 28 COMBI ErP SERIAL No. ENDING AC (GC 47-075-97), DUO-TEC 28 LPG COMBI ErP SERIAL No. ENDING AC (GC 47-075-98)
manualmanualBAXI appliance manual — DUO-TEC 28 HE LPG (GC 47-075-39)
manualmanualBAXI appliance manual — DUO-TEC COMBI 24 HE A (AFTER SERIAL No. BTG 0815) (GC 47-075-35), DUO-TEC COMBI 28 HE A (AFTER SERIAL No. CAC 0929) (GC 47-075-36)
manualmanualBAXI appliance manual — MEGAFLO 15 HE A SYSTEM (GC 41-075-55), MEGAFLO 18 HE A SYSTEM (GC 41-075-56), MEGAFLO 24 HE A SYSTEM FROM SERIAL NO BTF 0932 (GC 41-075-57)
manualmanualBAXI appliance manual — MEGAFLO 15 HE SYSTEM (GC 41-075-52), MEGAFLO 18 HE SYSTEM (GC 41-075-53)
manualmanualBAXI appliance manual — MEGAFLO 18 HE A SYSTEM LPG (GC 41-075-61)
manualmanualBAXI appliance manual — MEGAFLO SYSTEM ErP 15 SERIAL No. ENDING AC (GC 41-470-18), MEGAFLO SYSTEM ErP 15 SERIAL No. ENDING BC (GC 41-470-18), MEGAFLO SYSTEM ErP 15 SERIAL No. ENDING CC (GC 41-470-18), MEGAFLO SYSTEM ErP 18 SERIAL No. ENDING AC (GC 41-470-19), MEGAFLO SYSTEM ErP 18 SERIAL No. ENDING BC (GC 41-470-19), MEGAFLO SYSTEM ErP 18 SERIAL No. ENDING CC (GC 41-470-19), MEGAFLO SYSTEM ErP 24 SERIAL No. ENDING AC (GC 41-470-20), MEGAFLO SYSTEM ErP 24 SERIAL No. ENDING BC (GC 41-470-20), MEGAFLO SYSTEM ErP 24 SERIAL No. ENDING CC (GC 41-470-20)
manualmanualBAXI appliance manual — PLATINUM 24 COMBI ErP SERIAL No. ENDING AC (GC 47-077-04), PLATINUM 24 COMBI ErP SERIAL No. ENDING BC (GC 47-077-04), PLATINUM 24 COMBI ErP SERIAL No. ENDING CC (GC 47-077-04), PLATINUM 24 COMBI ErP SERIAL No. ENDING DC (GC 47-077-04), PLATINUM 24 COMBI ErP SERIAL No. ENDING EC (GC 47-077-04), PLATINUM 28 COMBI ErP SERIAL No. ENDING AC (GC 47-077-05), PLATINUM 28 COMBI ErP SERIAL No. ENDING BC (GC 47-077-05), PLATINUM 28 COMBI ErP SERIAL No. ENDING CC (GC 47-077-05), PLATINUM 28 COMBI ErP SERIAL No. ENDING DC (GC 47-077-05), PLATINUM 28 COMBI ErP SERIAL No. ENDING EC (GC 47-077-05)
manualmanualBAXI appliance manual — PLATINUM COMBI 24 HE A - AFTER SERIAL No. BMY 0815 (GC 47-075-31), PLATINUM COMBI 28 HE A - AFTER SERIAL No. BNC 0932 (GC 47-075-32)
manualmanualPOTTERTON appliance manual — GOLD COMBI ErP 24 - SERIAL No. ENDING AC (GC 47-393-43), GOLD COMBI ErP 24 - SERIAL No. ENDING BC (GC 47-393-43), GOLD COMBI ErP 24 - SERIAL No. ENDING DC (GC 47-393-43), GOLD COMBI ErP 24 - SERIAL No. ENDING EC (GC 47-393-43), GOLD COMBI ErP 28 - SERIAL No. ENDING AC (GC 47-393-44), GOLD COMBI ErP 28 - SERIAL No. ENDING BC (GC 47-393-44), GOLD COMBI ErP 28 - SERIAL No. ENDING DC (GC 47-393-44), GOLD COMBI ErP 28 - SERIAL No. ENDING EC (GC 47-393-44), GOLD COMBI ErP 28 LPG - SERIAL No. ENDING AC (GC 47-393-45), GOLD COMBI ErP 28 LPG - SERIAL No. ENDING BC (GC 47-393-45), GOLD COMBI ErP 28 LPG - SERIAL No. ENDING DC (GC 47-393-45), GOLD COMBI ErP 28 LPG - SERIAL No. ENDING EC (GC 47-393-45)
manualmanualPOTTERTON appliance manual — GOLD COMBI HE A 24 - AFTER SERIAL No. BMX 0815 AND AFTER GNH 0815 (GC 47-393-18), GOLD COMBI HE A 28 - AFTER SERIAL No. BNF 0932 AND AFTER GNK 0932 (GC 47-393-19), GOLD COMBI HE A 28 LPG (GC 47-393-30)
manualmanualPOTTERTON appliance manual — GOLD SYSTEM ErP 18 SERIAL No. ENDING AC (GC 41-592-39), GOLD SYSTEM ErP 18 SERIAL No. ENDING BC & CC (GC 41-592-39), GOLD SYSTEM ErP 18 SERIAL No. ENDING DC (GC 41-592-39), GOLD SYSTEM ErP 24 SERIAL No. ENDING AC (GC 41-592-40), GOLD SYSTEM ErP 24 SERIAL No. ENDING BC & CC (GC 41-592-40), GOLD SYSTEM ErP 24 SERIAL No. ENDING DC (GC 41-592-40)
manualmanualPOTTERTON appliance manual — HEATMAX COMBI 24 HE (GC 47-393-27), HEATMAX COMBI 28 HE (GC 47-393-28)
manualmanualPOTTERTON appliance manual — PROMAX COMBI Erp 24 - SERIAL No. ENDING AC (GC 47-393-47), PROMAX COMBI Erp 24 - SERIAL No. ENDING BC & CC (GC 47-393-47), PROMAX COMBI Erp 24 - SERIAL No. ENDING DC (GC 47-393-47), PROMAX COMBI Erp 24 - SERIAL No. ENDING EC (GC 47-393-47), PROMAX COMBI Erp 28 - SERIAL No. ENDING AC (GC 47-393-48), PROMAX COMBI Erp 28 - SERIAL No. ENDING BC & CC (GC 47-393-48), PROMAX COMBI Erp 28 - SERIAL No. ENDING DC (GC 47-393-48), PROMAX COMBI Erp 28 - SERIAL No. ENDING EC (GC 47-393-48), PROMAX PLUS A SYSTEM 24 HE (GC 47-393-47)
manualmanualPOTTERTON appliance manual — PROMAX COMBI PLUS 24 HE (GC 47-393-17)
manualmanualPOTTERTON appliance manual — PROMAX COMBI PLUS 24 HE A (GC 47-393-21), PROMAX COMBI PLUS 28 HE A (AFTER SERIAL NO. AWA 0919) (GC 47-393-22)
manualmanualPOTTERTON appliance manual — PROMAX COMBI PLUS 24 HE LPG (GC 47-393-24)
manualmanualPOTTERTON appliance manual — PROMAX PLUS A SYSTEM 12 HE (GC 41-591-99), PROMAX PLUS A SYSTEM 15 HE (GC 41-592-01), PROMAX PLUS A SYSTEM 18 HE (GC 41-592-02), PROMAX PLUS A SYSTEM 24 HE (AFTER SERIAL NO. AWD 0932) (GC 41-592-03)
manualmanualPOTTERTON appliance manual — PROMAX PLUS SYSTEM 12 HE (GC 41-591-90), PROMAX PLUS SYSTEM 15 HE (GC 41-591-91), PROMAX PLUS SYSTEM 18 HE (GC 41-591-92)
manualmanualPOTTERTON appliance manual — PROMAX PLUS SYSTEM 24 HE LPG (AFTER SERIAL NO. ELW 0932) (GC 41-592-11)
manualmanualPOTTERTON appliance manual — PROMAX SYSTEM Erp 12 - SERIAL No. ENDING AC (GC 41-592-42), PROMAX SYSTEM Erp 12 - SERIAL No. ENDING BC & CC (GC 41-592-42), PROMAX SYSTEM Erp 12 - SERIAL No. ENDING DC (GC 41-592-42), PROMAX SYSTEM Erp 15 - SERIAL No. ENDING AC (GC 41-592-43), PROMAX SYSTEM Erp 15 - SERIAL No. ENDING BC & CC (GC 41-592-43), PROMAX SYSTEM Erp 15 - SERIAL No. ENDING DC (GC 41-592-43), PROMAX SYSTEM Erp 18 - SERIAL No. ENDING AC (GC 41-592-44), PROMAX SYSTEM Erp 18 - SERIAL No. ENDING BC & CC (GC 41-592-44), PROMAX SYSTEM Erp 18 - SERIAL No. ENDING DC (GC 41-592-44), PROMAX SYSTEM Erp 24 - SERIAL No. ENDING AC (GC 41-592-45), PROMAX SYSTEM Erp 24 - SERIAL No. ENDING BC & CC (GC 41-592-45), PROMAX SYSTEM Erp 24 - SERIAL No. ENDING DC (GC 41-592-45)
manualmanualPOTTERTON appliance manual — TITANIUM 24 (GC 47-393-39), TITANIUM 28 (GC 47-393-40)
manualmanualPOTTERTON appliance manual — TITANIUM COMBI 24 ErP - SERIAL No. ENDING AC (GC 47-393-50), TITANIUM COMBI 24 ErP - SERIAL No. ENDING BC & CC (GC 47-393-50), TITANIUM COMBI 24 ErP - SERIAL No. ENDING DC (GC 47-393-50), TITANIUM COMBI 24 ErP - SERIAL No. ENDING EC (GC 47-393-50), TITANIUM COMBI 28 ErP - SERIAL No. ENDING AC (GC 47-393-51), TITANIUM COMBI 28 ErP - SERIAL No. ENDING BC & CC (GC 47-393-51), TITANIUM COMBI 28 ErP - SERIAL No. ENDING DC (GC 47-393-51), TITANIUM COMBI 28 ErP - SERIAL No. ENDING EC (GC 47-393-51)
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