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Vaillant Heat Exchanger 0020271250

Vaillant

Vaillant Heat Exchanger 0020271250

Vaillant heat exchanger, part number 0020271250, for Etec+ VU 446/5-5 appliances.

At a glance

  • Part type: heat exchanger
  • Appliance family: Etec+ VU
  • Also known as 1388736
Manufacturer part no.
0020271250
Showing prices

£492.58

£410.48 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 Vaillant 0020271250 is a heat exchanger used in Vaillant Etec+ VU appliances. It transfers heat from the combustion circuit into the heating water, forming the primary heat transfer component of the boiler. It is listed for the VU 446/5-5 models shown below.

Signs this part needs replacing

  • Water weeping or staining around the heat exchanger body or its connections
  • Kettling, banging or gurgling noises from the appliance during operation
  • Reduced heating output or the appliance struggling to reach temperature
  • Discoloured or dirty system water indicating internal corrosion or debris build-up
  • Repeated lockouts or fault conditions traced to the heat exchanger circuit

Before you order

  • Check the appliance rating plate and confirm the model matches the fit list above
  • Confirm the existing part number is 0020271250 before ordering
  • Inspect seals, gaskets and connections for condition, as these are not supplied with the part unless stated
  • Verify the appliance is safe to work on and isolate the gas, water and electrical supplies before removal

Not sure which part?

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