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Ariston Fan 999489

Ariston

Ariston Fan 999489

Fan assembly for the Ariston Microsystem 21 RFFI boiler, part number 999489.

At a glance

  • Part type: fan assembly
  • Appliance family: Microsystem 21 RFFI
  • Also known as 1577646
Manufacturer part no.
999489
Showing prices

£101.32

£84.43 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 Ariston 999489 is a fan assembly for the Ariston Microsystem 21 RFFI gas boiler. It moves combustion air through the appliance and discharges flue products, and it forms part of the boiler's combustion circuit. The assembly is supplied as a complete fan unit.

Signs this part needs replacing

  • The fan is noisy in operation, with rumbling, scraping or bearing whine
  • The fan does not spin up when the boiler is called for heat
  • The boiler locks out or fails to ignite because the fan cannot prove airflow
  • Fan speed is erratic or the fan runs intermittently
  • Visible damage, contamination or stiffness when the fan is turned by hand

Before you order

  • Confirm the appliance is an Ariston Microsystem 21 RFFI
  • Check the boiler serial number against the range shown in the fit list
  • Identify whether the appliance is the NG or LPG edition
  • Compare the existing fan assembly with the part number 999489 before fitting

Not sure which part?

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