AluminiumAluminium brazing sheetsBrazing sheets used in automotiveAutomotive heat exchangerHeat exchangers applications (radiators, evaporatorsEvaporator etc.) usually are comprised of core aluminiumAluminium sheet and clad aluminiumAluminium layers on at least one side or on both sides. These clad sheets are conventionally manufactured with hot cladding route which is an energy intensive process with strong process controlProcess control requirements for good quality sheets. This study discusses an innovative technology for manufacturing cladded brazing sheetsBrazing sheets through an energy efficient cold claddingCold cladding process. Lab scale and subsequent pilot trials with cladding of AA3003 alloy with AA4045 alloy on one side and both sides show that there is significant improvement in quality of cold clad processed brazing sheetBrazing sheets compared to the conventional cladding process. Effect of surfaceSurface preparation on the quality of bonding between the core and clad sheets is systematically studied. Excellent bonding was achieved with minimum variationVariations in the clad thickness (around 0.4% as against 1% seen in hot clad sheets). Impact of silicon particles and silicon particle sizes on brazability were also studied and compared with hot cladded sheets. Fillet joints with the fin on both sides were investigated in further trials at commercial scale brazing furnaceFurnace where samples were assembled. The cold claddingCold cladding technology is shown to be used as an alternative process technologyProcess technology with key advantages over the conventional hot cladding process for brazing sheetsBrazing sheets.