PROCESS FOR MANUFACTURING A CAST METAL HEAT EXCHANGER HOUSING FOR A VEHICLE HEATER

A process for manufacturing a cast metal heat exchanger housing () for a vehicle heater having a pot-shape housing wall () extending in a direction of a housing longitudinal axis (L) and having a plurality of heat transfer ribs () extending on an outer side of the housing wall () in the area of a circumferential wall () and in the area of a bottom wall () of the housing wall () in the direction of the housing longitudinal axis (L). The process includes metal casting wherein a sprue cross-sectional area including at least some of the heat transfer ribs (). The cast metal heat exchanger housing has an axial end face formed upon cutting off metallic material that is essentially at right angles to the housing longitudinal axis and extends into an area of at least some of the heat transfer ribs.