Ferroli
Ferroli Heat Exchanger 39821542
Complete heat exchanger for Ferroli Optimax HE 25S and HE 31C gas boilers, part number 39821542.
At a glance
- Also known as 1211643
Showing prices
£820.28
£683.57 ex. VAT · VAT at 20%
Available to order · 3 working days
Available to order · 3 working days
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 Ferroli 39821542 is a complete heat exchanger for Ferroli Optimax HE gas boilers. It transfers heat from the combustion gases into the heating and domestic hot water circuit. It is supplied as a complete assembly.
Signs this part needs replacing
- Water leaking from the heat exchanger body or its connections
- Repeated pressure loss on the heating circuit
- Kettling, banging or rumbling noises during operation
- Visible corrosion, scale or debris build-up on the heat exchanger
- Reduced heating or hot water performance
Before you order
- Confirm the appliance is a Ferroli Optimax HE 25S or HE 31C
- Check the GC number on the appliance data badge against the numbers listed above
- Verify the part number 39821542 matches the existing component
- Check the appliance data badge for the model, GC number and serial number
Compliance
| Alternative numbers | 1211643 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| FERROLI FERROLI OPTIMAX HE 25S | — | — | — | |
| FERROLI FERROLI OPTIMAX HE 31C | — | — | — | |
| FERROLI OPTIMAX HE 25S - 30K0318000 (21/09/2006) | 41-267-25 | 41-267-25 | — | — |
| FERROLI OPTIMAX HE 31C - 30K0321000 (23/10/2006) | 47-267-42 | 47-267-42 | — | — |
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.
No technical questions yet for this part.
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Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.