Baxi
Baxi Heat Exchanger CH 10-Plates 7875803
Baxi CH 10-plate heat exchanger for Aquaheat Hi/HWI 4/50 and 14/50 appliances, supplied with 3/4 gaskets.
At a glance
- Also known as 1129428
£216.59
£180.49 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 7875803 is a 10-plate central heating heat exchanger supplied with 3/4 gaskets. It transfers heat between the appliance's primary circuit and the heating water in Baxi Aquaheat Hi/HWI appliances. The plate stack is built for compact, high-efficiency heat transfer within the unit.
Signs this part needs replacing
- Reduced heating output or radiators that no longer reach temperature
- Water leaking from the plate stack or from the gasket joints
- Gaskets weeping, perished or visibly degraded
- Restricted flow through the exchanger caused by scale or debris build-up
- Uneven heat transfer between the primary and heating circuits
Before you order
- Confirm your appliance model matches one of the fitments listed above
- Check the connection size and plate count against the part being removed
- Inspect the existing gaskets and mating faces for damage before refitting
- Verify the part number 7875803 against the appliance's parts list
Compliance
| Alternative numbers | 1129428 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI AQUAHEAT HI/ HWI - 4/50 | — | — | — | |
| BAXI AQUAHEAT HI/HWI - 14/50 | — | — | — |
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.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.