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Navien Main Heat Exchanger 30018826A

Navien

Navien Main Heat Exchanger 30018826A

Main heat exchanger for Navien NCB-CE ERP system and combination boilers, part number 30018826A.

Manufacturer part no.
30018826A
Showing prices

£652.22

£543.52 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 Main Heat Exchanger is a Navien component for NCB-CE ERP boilers. It provides the primary heat transfer function within the boiler. This part is identified by part number 30018826A.

Signs this part needs replacing

  • Reduced heating or hot water performance
  • Kettling, banging or unusual noises from the boiler
  • Water leaks around the heat exchanger or its connections
  • Repeated overheating, lockout or ignition faults
  • Discoloured or dirty system water

Before you order

  • Confirm the boiler is a Navien NCB-CE ERP model.
  • Check the boiler model against the fitment list.
  • Verify the part number 30018826A matches the component being removed.
  • Inspect existing seals, gaskets and connections; replace if damaged.

Not sure which part?

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