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Glow-worm DHW 20 plate heat exchanger 0020014403

Glow-worm

Glow-worm DHW 20 plate heat exchanger 0020014403

Genuine 20-plate domestic hot water heat exchanger for the Glow-worm Flexicom 35Cx and Ultracom range.

At a glance

  • Also known as GLOWWORM0020014403C
  • Fitting must be carried out by a Gas Safe registered engineer
Manufacturer part no.
0020014403C
Showing prices

£96.00

£80.00 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 Glow-worm 0020014403 is a genuine 20-plate domestic hot water (DHW) heat exchanger. It transfers heat from the boiler's primary circuit to the water drawn off at the taps, so a worn unit shows up as poor hot water rather than a heating fault.

Signs this part needs replacing

  • Hot water runs lukewarm or loses temperature quickly
  • Reduced hot water flow rate at the taps
  • Boiler short-cycling during hot water demand
  • Visible limescale build-up or weeping from the plate stack

Before you order

  • Match the part number on your existing exchanger to 0020014403
  • Check for limescale as the underlying cause, especially in hard water areas
  • Isolate water and electrical power before removing the old unit
  • Fitting must be carried out by a Gas Safe registered engineer

Not sure which part?

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