An air-conditioning apparatus comprising: an outdoor unit including an outdoor heat exchanger ; an indoor unit including an indoor heat exchanger ; and a relay unit provided between the outdoor unit and the indoor unit , and including one or more first refrigerant supply pipes and one or more second refrigerant supply pipes that are connected to the indoor heat exchanger of the indoor unit , wherein the one or more first refrigerant supply pipes and the one or more second refrigerant supply pipes protrude from a side surface (B) of the relay unit , the one or more first refrigerant supply pipes are each provided above an associated one of the one or more second refrigerant supply pipes , a length (L1) of part of the one or more first refrigerant supply pipes that protrudes from the side surface (B) is greater than a length (L2) of part of the one or more second refrigerant supply pipes that protrudes from the side surface (B), the one or more first refrigerant supply pipes each include: a first pipe fixed to the side surface (B) of the relay unit ; and a first joint located at a distal end of the first pipe , the first joint has: a first portion located at the distal end of the first pipe ; a second portion that is located at one of ends of the first portion that is closer to the indoor unit , the second portion being connected to the indoor heat exchanger of the indoor unit ; a third portion that is formed in the shape of a circular tube and located at the other end of the first portion , the other end of the first portion being closer to the relay unit ; and a brazed portion located between the third portion and the first pipe of the first refrigerant supply pipe , the third portion being brazed to the first pipe of the first refrigerant supply pipe , and a distance (L2 + D) from the side surface (B) to the one of the ends of the first portion is longer than a distance (L2) from the side surface (B) to a distal end of the second refrigerant supply pipe . an outdoor unit including an outdoor heat exchanger ; an indoor unit including an indoor heat exchanger ; and a relay unit provided between the outdoor unit and the indoor unit , and including one or more first refrigerant supply pipes and one or more second refrigerant supply pipes that are connected to the indoor heat exchanger of the indoor unit , wherein the one or more first refrigerant supply pipes and the one or more second refrigerant supply pipes protrude from a side surface (B) of the relay unit , the one or more first refrigerant supply pipes are each provided above an associated one of the one or more second refrigerant supply pipes , a length (L1) of part of the one or more first refrigerant supply pipes that protrudes from the side surface (B) is greater than a length (L2) of part of the one or more second refrigerant supply pipes that protrudes from the side surface (B), the one or more first refrigerant supply pipes each include: a first pipe fixed to the side surface (B) of the relay unit ; and a first joint located at a distal end of the first pipe , the first joint has: a first portion located at the distal end of the first pipe ; a second portion that is located at one of ends of the first portion that is closer to the indoor unit , the second portion being connected to the indoor heat exchanger of the indoor unit ; a third portion that is formed in the shape of a circular tube and located at the other end of the first portion , the other end of the first portion being closer to the relay unit ; and a brazed portion located between the third portion and the first pipe of the first refrigerant supply pipe , the third portion being brazed to the first pipe of the first refrigerant supply pipe , and a distance (L2 + D) from the side surface (B) to the one of the ends of the first portion is longer than a distance (L2) from the side surface (B) to a distal end of the second refrigerant supply pipe . <EOS>