Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Worcester Bosch Plate Heat Exchanger C-PHE 20 87186429550

Worcester Bosch

Worcester Bosch Plate Heat Exchanger C-PHE 20 87186429550

Plate heat exchanger C-PHE 20 for Worcester Bosch Greenstar 1000, 2000 and 4000 series boilers.

At a glance

  • Appliance family: Greenstar 1000, 2000 and 4000 series
  • Also known as 1038207
Manufacturer part no.
87186429550
Showing prices

£206.63

£172.19 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
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 C-PHE 20 is a plate heat exchanger from Worcester Bosch. It is used in Greenstar 1000, 2000 and 4000 series boilers to transfer heat between the primary circuit and the domestic hot water. This component is identified by part number 87186429550.

Signs this part needs replacing

  • Domestic hot water runs hot and cold or loses temperature
  • Reduced hot water flow rate at taps
  • Boiler locks out or displays a fault code related to DHW
  • Visible leaks or weeping from the plate heat exchanger
  • Scale or debris build-up causing poor heat transfer

Before you order

  • Confirm your boiler model and GC number against the fit list above
  • Check the part number on the existing component matches 87186429550
  • Inspect the mounting seals and connections for wear
  • Ensure the system is isolated and drained before removal

Not sure which part?

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