Heat exchange unit and air handling unit

A heat exchange unit comprising:

• a plurality of flat tubes that is arranged along a first direction and allows a refrigerant to flow therein;
• a first header and a second header that are connected to both ends of the plurality of flat tubes and arranged to extend in the first direction;
• and
• a drain pan that receives condensation water from the plurality of flat tubes, the first header, and the second header, wherein
• the plurality of flat tubes each includes:
• a first portion that is connected to the first header and extends in a predetermined direction when viewed from the first direction;
• a second portion that is connected to the second header and extends in a predetermined direction when viewed from the first direction;
• and
• a connecting portion that connects the first portion and the second portion such that an angle between a direction in which the first portion extends and a direction in which the second portion extends when viewed from the first direction is less than 180°,
• the plurality of flat tubes is arranged such that the connecting portion is located above the first header and the second header,
• the drain pan includes:
• a first wall surrounding an opening through which air passes, which flows in a second direction orthogonal to a direction in which the drain pan extends when viewed from the first direction;
• a second wall located outside the first wall when viewed from the second direction;
• and
• a receiving portion connecting the first wall and the second wall below the first header and below the second header,
• the first wall includes a third wall extending in the first direction when viewed from the second direction, and
• the receiving portion has a first surface that is an upper surface inclined to have a downward gradient from the third wall toward the second wall.