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Reznor Heat Exchanger 36 20420 SS

Reznor

Reznor Heat Exchanger 36 20420 SS

409 stainless steel heat exchanger with gasket for Reznor heating appliances.

At a glance

  • Also known as 2530696
Manufacturer part no.
36 20420 SS
Showing prices

£3,233.76

£2,694.80 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 Reznor 36 20420 SS heat exchanger is a 409 stainless steel component supplied with a gasket. It is intended for use in Reznor heating appliances, with the product name referencing X100 and X1025 models. The heat exchanger transfers heat from combustion gases to the air stream within the appliance.

Signs this part needs replacing

  • Visible cracks, corrosion or soot deposits on the heat exchanger surfaces
  • Flue gas odours or leakage around the appliance
  • Reduced heat output or uneven heating
  • Condensation or water ingress inside the appliance
  • The appliance fails to ignite or shuts down unexpectedly

Before you order

  • Confirm the appliance model against the fit list: Reznor T2025 and Reznor X100
  • Note that the product name also references X100 and X1025; verify compatibility with your specific model
  • Check the existing gasket and mounting surfaces for damage before fitting the new heat exchanger
  • Have the installation carried out by a qualified heating engineer

Not sure which part?

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