A heat exchanger assembly is provided. The heat exchanger assembly includes a first heat exchange part configured to cool an electrical equipment of a fuel cell, a second heat exchange part that cools a fuel cell stack, and a body part connecting the first heat exchange part and the second heat exchange part. The body part includes a first opening that opens in a first direction, and the first heat exchange part is disposed in the first opening, and a second opening that opens in a second direction, and the second heat exchange part is disposed in the second opening. The first direction is a direction in which the body part faces the first heat exchange part, and the second direction is opposite to the first direction.