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Alpha Casing Insulating Panel E-Tec 20S 1039360

Alpha

Alpha Casing Insulating Panel E-Tec 20S 1039360

Alpha casing insulating panel, part 1.039360, for the E-Tec 20S boiler; a replacement insulation board that sits behind the outer casing.

At a glance

  • Part type: Casing insulating panel
  • Appliance family: E-Tec 20S
Manufacturer part no.
1039360
Showing prices

£8.62

£7.18 ex. VAT · VAT at 20%

Available to order · 5-7 working days
Available to order · 5-7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Alpha 1.039360 casing insulating panel is a replacement insulation component for the outer casing of the Alpha E-Tec 20S boiler. It sits between the internal components and the outer panels, reducing heat transfer to the casing surface and limiting standing heat loss from the appliance. Alpha supplies it as a direct replacement for the panel originally fitted to the E-Tec 20S.

Signs this part needs replacing

  • The insulation board crumbles, flakes or breaks up when the casing is removed
  • Heat discolouration or scorching across the panel surface
  • Outer casing panels feel unusually hot during normal running
  • The panel no longer sits flat against the casing, leaving visible gaps
  • Damage or deterioration spotted during a routine service

Before you order

  • Check the part number on the existing panel or in the boiler documentation against 1.039360.
  • Confirm the appliance is an Alpha E-Tec 20S, as the panel is shaped for that casing.
  • Older labels may show the alternative number 039360 for the same item.
  • Inspect casing seals and fixings while the panel is off and renew any that are perished.

Not sure which part?

Tell the parts assistant what it's going into — the appliance make and model, or the GC number off the data badge — and it will check this part is on the fit list.