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Viessmann Plate Heat Exchanger CB10-26 7831659

Viessmann

Viessmann Plate Heat Exchanger CB10-26 7831659

Viessmann CB10-26 plate heat exchanger with seals for Vitodens 111-W, 222-F and 242-F gas boilers.

At a glance

  • Also known as 2321140
Manufacturer part no.
7831659
Showing prices

£198.38

£165.32 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 Viessmann CB10-26 plate heat exchanger is a component used in the heat transfer circuit of compatible Vitodens gas boilers. It is supplied with seals and carries the Viessmann part number 7831659. It is classed as a gas boiler spare within the heat exchanger category.

Signs this part needs replacing

  • Domestic hot water temperature fluctuates or runs hot and cold during draw-off
  • Reduced hot water output or slow recovery at the tap
  • Water weeping or dripping from the plate pack or seal edges
  • Scale or sludge build-up restricting flow through the plates

Before you order

  • Confirm the appliance model and serial number match the fits list above
  • Check the existing heat exchanger carries the CB10-26 designation
  • Confirm the seals are present and correct before starting the job
  • Allow for isolation and draining of the boiler before removal

Not sure which part?

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