Heat exchange arrangement in particular for a heating system of a vehicle

The arrangement (10) has a pot-shaped heat exchanger housing (12) that has an outer housing (14) with an outer circumferential wall (18) and an outer bottom wall (20) and an inner housing (16) with an inner circumferential wall (22) and an inner bottom wall (24). A heat carrier medium flow space is formed between outer and inner walls and a heat carrier medium flow connecting portion (52) is provided at an axial end area (44) of outer circumferential wall of outer housing. A waste gas flow connecting portion (30) opens towards interior space (26) of housing. An independent claim is included for a vehicle heater.