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Vaillant Venturi VAILLANT0020135122

Vaillant

Vaillant Venturi VAILLANT0020135122

Vaillant 0020135122 venturi for ecoTEC Plus combi and system boilers, a replacement component in the gas and air mixing path.

At a glance

  • Part type: Venturi
  • Appliance family: ecoTEC Plus (2012 onwards)
Manufacturer part no.
VAILLANT0020135122
Showing prices

£37.20

£31.00 ex. VAT · VAT at 20%

In stock
Cut-off passed — dispatches next 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 Vaillant 0020135122 is a venturi supplied by Vaillant for use in its ecoTEC Plus range of gas boilers. It sits within the gas and air mixing arrangement, where the change in pressure across the narrowed section draws combustion air in and helps regulate the mixture delivered to the burner. Correct operation of this component supports stable ignition, consistent combustion and dependable day-to-day running of the appliance.

Signs this part needs replacing

  • The boiler locks out or fails to establish a stable flame on start-up
  • Combustion readings drift outside the expected range and cannot be corrected by normal servicing adjustments
  • Uneven or unstable flame picture at the burner
  • Whistling, roaring or unusual noise from the gas and air intake area
  • Visible damage, blockage or debris build-up within the venturi body

Before you order

  • Check the model and serial number on the appliance data badge against the compatibility information for this part
  • Compare the part number on the component being replaced with 0020135122 to confirm it is the correct item
  • Inspect any seals, gaskets or O-rings disturbed during removal and replace them where they are worn or damaged

Not sure which part?

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