A method of manufacturing a heat exchanger includes providing a first slab having a first plurality of tubes extending from a first end to a second end of the first slab along a first length of the first slab. The method includes providing a second slab having a second plurality of tubes extending from a third end to a fourth end of the second slab along a second length of the second slab. The method includes positioning a first face of the first slab adjacent to a second face of the second slab in a side-by-side configuration and securing a connector to the first end of the first slab and to the third end of the second slab in the side-by-side configuration. The method includes bending the first slab and the second slab together in the side-by-side configuration to form a bent configuration of the heat exchanger.