A series of metal tubes that are heated by the burners transfers the heat from the products of combustion to the room air.
Combustion is another word for burning. In a combustion reaction, fuel is heated and it reacts with oxygen.
A series of metal tubes that are heated by the burners in order to warm the inside air.
As gas combusts inside the heat exchanger, these metal baffles get hot and transfer their radiant heat into the passing air.
Any damage to the heat exchanger could let combustion gases leak into the house air.
Learn more about the combustion here:
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