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Glow-worm Heat Exchanger & Sump 0020026488

Glow-worm

Glow-worm Heat Exchanger & Sump 0020026488

Heat exchanger and sump assembly, part 0020026488, for Glow-worm Flexicom HX series gas boilers.

At a glance

  • Appliance family: Flexicom HX
  • Also known as 1339635
Manufacturer part no.
0020026488
Showing prices

£857.92

£714.93 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 Glow-worm 0020026488 is a heat exchanger and sump assembly for the Flexicom HX range of gas boilers. The heat exchanger transfers heat from combustion into the system water, and the sump forms the lower collection section of the assembly. It is supplied as a combined unit for this appliance family.

Signs this part needs replacing

  • Water leaking from the heat exchanger body or sump section
  • Overheating or repeated boiler lockout linked to poor heat transfer
  • Visible corrosion, scale or debris build-up on the exchanger
  • Condensate leaking from the sump
  • Overheat faults that persist after the pump and system flow have been checked

Before you order

  • Confirm the boiler is one of the Flexicom HX models listed above
  • Check the part number on the existing component matches 0020026488
  • Confirm the fault lies with the heat exchanger or sump rather than another component
  • Check access and system isolation requirements before removal

Not sure which part?

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