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Ariston Heat Exchanger Twin Pass 998619

Ariston

Ariston Heat Exchanger Twin Pass 998619

Twin pass cross flow heat exchanger for Ariston Microcombi, Microtec, Excalibur, EST and R2 gas boilers.

At a glance

  • Also known as EXCHANGER-TWIN-PASS, 1577186
Manufacturer part no.
998619
Showing prices

£359.17

£299.31 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 998619 is a twin pass, cross flow heat exchanger used in Ariston gas boilers. It transfers heat from the combustion circuit to the water circuit in appliances across the Microcombi, Microtec, Excalibur, EST and R2 ranges. It is listed as a gas boiler spare for the models shown below.

Signs this part needs replacing

  • Water leaking from the heat exchanger body, seals or connections
  • Reduced heating or hot water output
  • Kettling, banging or rumbling noises from the boiler
  • Boiler overheating, locking out or failing to reach temperature
  • Sludge or scale restricting flow through the waterways

Before you order

  • Check the boiler model, edition and serial number against the fitment list
  • Confirm the GC number where one is shown
  • Confirm whether the appliance is natural gas or LPG
  • Check the existing component is marked 998619

Not sure which part?

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