Broag Heat Exchanger Gas 210 Pro S100633

The Broag S100633 is a heat exchanger built for the Gas 210 Pro family of commercial boilers. It sits in the combustion path and transfers heat from the burner gases into the heating water circuit, so it is central to the appliance's efficiency and output. As a gas-side component, it is supplied as a direct replacement for the original factory part.

• Heating output drops or the boiler struggles to reach the set flow temperature
• The appliance locks out or cycles repeatedly on an overheat fault
• Scale, corrosion pitting or soot deposits are visible on the exchanger surfaces
• Water weeps from the exchanger body or from its connection joints and seals
• Combustion readings drift outside the expected range for the appliance

• Confirm the appliance model against the compatibility list before ordering
• Check the part number on the component being removed matches S100633
• Inspect the seals and gaskets exposed during removal and renew them where needed
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.