Abstract: A condenser for refrigeration systems containing a refrigerant gas and applied to refrigeration appliances of the type comprising an internally refrigerated cabinet (G) presenting external walls (20) which are at least partially defined in a metallic and comprise at least one condensation coil (S) formed by a plurality of tube extensions (10) for conducting refrigerant gas and which are generally rectilinear and mutually coplanar, each of said tube extensions (10) being seated and retained inside a respective groove (21), which is formed by bending the metallic plate of a respective external wall (20) of the cabinet (G).