Biasi
Biasi DHW Heat Exchanger BI1001101
Biasi domestic hot water heat exchanger, part BI1001101, for Biasi combi boilers including Activ A 25C and 30C models.
At a glance
- Part type: Heat exchanger (domestic hot water / secondary)
- Also known as 1650000, N0113-A
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Showing prices
£98.50
£82.08 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
The Biasi domestic hot water heat exchanger, part BI1001101, is the secondary heat exchanger used in Biasi combi and system boilers. It takes heat from the primary circuit water and passes it to the domestic hot water supply, so the two circuits stay separate while the tap water is heated on demand. It is listed by Biasi under the spare part type Heat Exchangers.
Signs this part needs replacing
- Hot water runs cool, or swings between hot and cold at the tap
- Noticeably reduced hot water flow rate compared with the cold supply
- Boiler locks out or displays a fault code when hot water is drawn
- Water weeping from the plate body or from its connections
- Scale build-up restricting the domestic hot water path, most common in hard water areas
Before you order
- Check the GC number and model on the appliance data badge against the compatibility list.
- Confirm the previous number BI1181122 if the boiler has been worked on under an older reference.
- Inspect the existing seals and gaskets at the plate connections; replacements may be needed for refitting.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Heat Exchangers |
|---|---|
| Length | 0.1mm |
| Width | 0.1mm |
| Depth | 0.1mm |
Compliance
| Manufacturer part number (MPN) | BI1001101 |
|---|---|
| GC number | E01-204 |
| Barcode / EAN | 8023585800942 |
| Commodity code | 8419 50 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | DHW-EXCHANGER-ADV--INOVIA-25, BI1181122, 1650000, N0113-A |
| Previous numbers | BI1181122 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BIASI 24S | 47-970-10 | 47-970-10 | — | — |
| BIASI ACTIV A 25C | — | — | — | |
| BIASI ACTIV A 25C | 47-583-21 | 47-583-21 | — | — |
| BIASI ACTIV A 25C LPG | 47-583-21 | 47-583-21 | — | — |
| BIASI ACTIV A 30C | — | — | — | |
| BIASI ACTIV A 30C | 47-583-22 | 47-583-22 | — | — |
| BIASI ACTIV A 30C LPG | 47-583-22 | 47-583-22 | — | — |
| BIASI ACTIV A 35C | 47-583-23 | 47-583-23 | — | — |
| BIASI ACTIV A 35C | — | — | — | |
| BIASI ACTIV A 35C LPG | 47-583-23 | 47-583-23 | — | — |
Showing 10 of 68 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
BIASI appliance manual — 24S (GC 47-970-10)
manualmanualBIASI appliance manual — ACTIV A 25C (GC 47-583-21), ACTIV A 25C LPG (GC 47-583-21), ACTIV A 30C (GC 47-583-22), ACTIV A 30C LPG (GC 47-583-22), ACTIV A 35C (GC 47-583-23), ACTIV A 35C LPG (GC 47-583-23)
manualmanualBIASI appliance manual — ACTIV A PLUS 25C (GC 47-583-28), ACTIV A PLUS 25C LPG (GC 47-583-28)
manualmanualBIASI appliance manual — ADVANCE 25C (GC 47-583-43), ADVANCE 25C LPG (GC 47-583-43)
manualmanualBIASI appliance manual — ADVANCE PLUS 25C (GC 47-583-29), ADVANCE PLUS 25C LPG (GC 47-583-29)
manualmanualBIASI appliance manual — ADVANCE PLUS 25C ERP (GC 47-583-35), ADVANCE PLUS 25C ERP LPG (GC 47-583-35)
manualmanualBIASI appliance manual — BASICA COND M275V.2024 SM (GC 47-583-49)
manualmanualBIASI appliance manual — GAIA 424S (GC 47-970-08)
manualmanualBIASI appliance manual — GARDA HE M96.24SM/B (GC 47-970-25), GARDA HE M96.24SM/D (GC 47-970-27)
manualmanualBIASI appliance manual — GARDA HE M96.24SM/B2 (GC 47-583-03A), GARDA HE M96.24SM/D2 (GC 47-583-03B)
manualmanualBIASI appliance manual — GARDA HE MK2 M96A.24SM/B (GC 47-583-15)
manualmanualBIASI appliance manual — GARDA M110B.24SM/E (GC 47-583-13)
manualmanualBIASI appliance manual — GARDA M90F.24S (GC 47-970-19)
manualmanualBIASI appliance manual — INOVIA 25C (GC 47-583-32), INOVIA 25C LPG (GC 47-583-32)
manualmanualBIASI appliance manual — INOVIA 25C ERP (GC 47-583-38), INOVIA 25C ERP LPG (GC 47-583-38)
manualmanualBIASI appliance manual — PARVA HE M96.24SM/P (GC 47-583-08)
manualmanualBIASI appliance manual — PARVA M90 - 24S (GC 47-970-13)
manualmanualBIASI appliance manual — PRISMA 24SE (GC 47-970-04), PRISMA 24SER (GC 41-970-02)
manualmanualBIASI appliance manual — RINNOVA ADAPTIVE M300V.2025 SM (GC 47-583-46)
manualmanualBIASI appliance manual — RIVA ADVANCE HE M110B.24SM/C (GC 47-583-11)
manualmanualBIASI appliance manual — RIVA COMPACT HE M96.24SM/C (GC 47-970-23)
manualmanualBIASI appliance manual — RIVA COMPACT HE M96.24SM/C2 (GC 47-583-05)
manualmanualBIASI appliance manual — RIVA COMPACT HE M96A.24SM/C (GC 47-583-17)
manualmanualBIASI appliance manual — RIVA COMPACT M90E.24S (GC 47-970-17)
manualmanualBIASI appliance manual — RIVA PLUS HE 24C ERP (GC 47-583-41), RIVA PLUS HE 24C ERP LPG (GC 47-583-41)
manualmanualBIASI appliance manual — RIVA PLUS HE M296.24SM/C (GC 47-583-24), RIVA PLUS HE M296.24SM/C LPG (GC 47-583-24)
manualNo technical questions yet for this part.
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