Ideal Heat Exchanger Assembly Kit 100 176223

The Ideal 176223 is a heat exchanger assembly kit used in Ideal Commercial gas boilers. It is the component that transfers heat from the burner's combustion gases into the system water, so it sits at the centre of the boiler's heating performance. The kit is listed for the Evomax 100 and Instinct Heat 100 commercial models.

• Water weeping or visible staining around the heat exchanger body or its connections.
• Reduced heating output, with the boiler struggling to reach or hold flow temperature.
• Kettling, banging or rumbling noises from the exchanger as scale or debris builds up.
• Repeated overheating lockouts or a boiler that cycles on and off short of the setpoint.
• Combustion readings drifting outside the expected range on a flue gas analysis.
• Corrosion, pitting or heavy scale deposits found during a strip-down service.

• Confirm the GC number and the exact model on the appliance data badge before ordering, as the kit is listed against specific Evomax and Instinct Heat variants.
• Check whether the existing gaskets and seals on the exchanger connections can be reused; a separate seal kit is often needed when the assembly is swapped.
• Note the alternative part number 1782276, which may appear on older paperwork or stock records for the same item.
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.