Indoor unit and air-conditioning apparatus

An indoor unit, comprising:

• a casing comprising a top plate and lateral plates;
• a motor mounted to a central part on an inner surface side of the top plate;
• a fan fixed to a rotary shaft of the motor and configured to rotate through drive of the motor;
• a drain pan received in the casing and mounted to the lateral plates of the casing;
• and
• a bellmouth mounted to the drain pan and configured to rectify a fluid flowing into the casing,
• the drain pan comprising a positioning fitting having
• a casing-fixing threaded hole for allowing the drain pan to be fixed to the casing with a screw;
• and
• a bellmouth-fixing threaded hole for allowing the bellmouth to be fixed to the drain pan with a screw
• wherein
• the positioning fitting has an oblong hole for allowing the bellmouth to be positioned in conjunction with the bellmouth-fixing threaded hole,
• the drain pan has a recessed portion conforming to the oblong hole, and
• the bellmouth has a projection portion to be fitted into the recessed portion through the oblong hole.