Baxi
Baxi Heat Exchanger CH 20-Plates 7875804
20-plate central heating heat exchanger for Baxi Aquaheat Hi/HWI appliances, supplied with gaskets.
At a glance
- Also known as 1129430
£276.22
£230.18 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 7875804 is a 20-plate central heating heat exchanger supplied with gaskets. It transfers heat between the primary circuit and the secondary water circuit inside Baxi Aquaheat Hi/HWI appliances. It is a serviceable component, replaced when the plate stack leaks, blocks or loses efficiency.
Signs this part needs replacing
- Water weeping from the plate stack or gasket joints
- Reduced heating output or slow warm-up
- Cold spots or uneven heat across the system
- Scale or debris restricting flow through the plates
- Repeated pressure loss in the heating circuit
Before you order
- Confirm your appliance model against the fit list above
- Check the plate count and connection size against the part being removed
- Inspect the gaskets for damage before fitting
Compliance
| Alternative numbers | 1129430 |
|---|
| 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.
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