Baxi
Baxi Heat Exchanger 39C 720544701
Baxi 720544701 heat exchanger for Avanta Plus 39C combi boilers, rated for the 39C appliance range and listed under GC number H39-098.
At a glance
- Part type: Heat exchanger
- Also known as HEAT-EXCHANGER-KIT-39C
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£1,114.80
£929.00 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
The Baxi 720544701 is a primary heat exchanger built for the Avanta Plus 39C combi boiler family. It transfers heat from the combustion gases into the sealed heating and domestic hot water circuits, making it the component that carries the appliance's main heat load. The part is supplied by Baxi and is listed against GC number H39-098.
Signs this part needs replacing
- Heating or hot water output drops noticeably, or the appliance struggles to reach temperature
- Kettling, banging or gurgling noises from the heat exchanger during firing
- Water weeping from the exchanger body, its connections or the surrounding seals
- Repeated overheating lockouts or fault codes on the boiler display
- Scale, sludge or discoloured waterways visible when the exchanger is inspected or removed
Before you order
- Confirm the GC number and appliance model against the compatibility list, as the same casing can carry different heat exchangers across the Avanta range.
- Check the old component for the previous number S62778, which may be marked on the part or in the appliance documentation.
- Inspect the sealing washers and gaskets on removal and replace any that are worn before refitting.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Heat Exchanger |
|---|
Compliance
| Manufacturer part number (MPN) | 720544701 |
|---|---|
| GC number | H39-098 |
| Barcode / EAN | 720544701 |
| Commodity code | 8419 50 90 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | HEAT-EXCHANGER-KIT-39C, S62778 |
| Previous numbers | S62778 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI AVANTA PLUS COMBI 39C | 47-075-80 | 47-075-80 | — | — |
| BROAG REMEHA AVANTA EXCLUSIVE 39C | 47-288-05 | 47-288-05 | — | — |
| BROAG REMEHA AVANTA PLUS COMBI 39C | 47-673-04 | 47-673-04 | — | — |
| BROAG REMEHA REMEHA AVANTA PLUS 39C COMBI | — | — | — |
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.
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