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Vaillant Heat Exchanger 0020209546

Vaillant

Vaillant Heat Exchanger 0020209546

Vaillant heat exchanger 0020209546 for ecoTEC PRO and ecoTEC PLUS boiler models.

At a glance

  • Part type: heat exchanger
  • Also known as 1388014
Manufacturer part no.
0020209546
Showing prices

£982.01

£818.34 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 Vaillant 0020209546 is a heat exchanger for Vaillant ecoTEC PRO and ecoTEC PLUS boilers. It transfers heat from the combustion circuit to the heating and domestic hot water circuits. The part is listed for the VU 226/5-3, VU 306/5-5 and VUW 266/5-3 and VUW 356/5-5 appliance families.

Signs this part needs replacing

  • Domestic hot water temperature that fluctuates or runs cold during draw-off
  • Kettling, banging or rumbling noises from the appliance during heating
  • Water or staining around the heat exchanger body or its connections
  • Repeated overheating faults or lockouts during normal operation
  • Visible scale build-up, corrosion or deformation on the exchanger surface

Before you order

  • Read the appliance rating plate and confirm the exact model and variant
  • Cross-check the GC number on the data badge against the appliance identification
  • Confirm the fault has been traced to the heat exchanger before ordering, as it is a primary component
  • Check whether the seals and gaskets required for refitting are supplied separately for your appliance

Not sure which part?

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