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Potterton Conventional Exchanger 5142375

Potterton

Potterton Conventional Exchanger 5142375

Conventional heat exchanger, part 5142375, for Potterton Commercial Sirius 2 and Sirius 3 boilers.

Manufacturer part no.
5142375
Showing prices

£894.66

£745.55 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 CONVENTIONAL EXCHANGER (FS50) is a conventional heat exchanger supplied under part number 5142375 for Potterton Commercial boilers. It forms the primary heat transfer component, taking heat from the combustion gases and passing it to the system water. It is listed for the Sirius 2 and Sirius 3 appliance families.

Signs this part needs replacing

  • Kettling, banging or rumbling noises from the boiler during operation
  • Water weeping or visible staining around the exchanger body or its connections
  • Corrosion, pitting or heavy scale build-up on the exchanger surfaces
  • Poor or reduced heat output to the system despite correct burner operation
  • Repeated overheating or lockout faults traced to restricted heat transfer

Before you order

  • Confirm the appliance model and range against the fits list, as the Sirius 2 and Sirius 3 variants are not interchangeable
  • Check the part number on the existing exchanger or the appliance documentation before ordering
  • Verify the FS or WH variant of the boiler, as the Wh50, Wh60 and Wh70 listings apply to units built from April 2016
  • Check for any associated seals, gaskets or pipe connections that may also need attention during the swap

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.