Ariston Insulation Panel Rear 65100426

The rear insulation panel is a manufacturer-supplied thermal barrier for Ariston UNO 23 MFFI boilers. It sits at the rear of the appliance, reducing heat loss from the combustion chamber and protecting surrounding components and casing surfaces from prolonged heat exposure. It is listed under Ariston gas boiler spares as part number 65100426.

• The panel is brittle, crumbling or breaking up when touched
• Visible scorching, charring or heavy discolouration across the panel surface
• The insulation has softened, sagged or separated from its mounting position
• Damp or contaminated insulation, often following a leak or condensate ingress
• Casing or nearby components running noticeably hotter than usual

• Confirm the boiler model and gas variant against the fit list above, as LPG and NG versions are listed separately
• Check the existing panel's position and condition so the correct rear panel is identified
• Verify the part number 65100426 matches the number on the component being replaced
• Isolate the appliance and follow the manufacturer's instructions before removing any casing or insulation