Heating system component and method for producing same

A heating system component for a heating system for heating a fluid medium, said heating system component comprising:

• a carrier unit having a wet side and a dry side, wherein said wet side corresponds to a surface of said carrier unit configured to be in contact with said fluid medium, and wherein said dry side is located on a surface opposite to said wet side;
• a heating unit arranged on said dry side of said carrier unit and isolated from said fluid medium by the carrier unit;
• and
• a thermally conducting paste arranged between said carrier unit and said heating unit,
• wherein said carrier unit comprises a groove having a bell-shaped cross-sectional profile with a rounded apex that points toward the wet side and a flat base opposite of the rounded apex, wherein said groove is configured to receive said heating unit, and wherein said heating unit has a corresponding bell-shaped cross-sectional profile,
• wherein the thermally conducting paste is arranged within the groove between said carrier unit and said heating unit, including between the rounded apex of the groove and a correspondingly shaped portion of the heating unit, and
• wherein said heating unit is welded directly to said carrier unit by at least one welded quilting seam.