Air conditioner

An air conditioner for performing a cooling operation

• and a heating operation by switching a four side valve, that includes an outdoor side heat exchanger operating as a condenser during the cooling operation and an evaporator during the heating operation, and having fins and a plurality of heat transfer tubes, wherein the outdoor side heat exchanger is placed on a baseboard that configures a lower portion of a chassis of the outdoor unit, comprising:
• the fins and the heat transfer tubes of the outdoor side heat exchanger constructed with aluminum or aluminum alloy;
• and
• the baseboard constructed with Zn—Al plated steel board or Zn—Al—Mg plated steel board;
• wherein the outdoor side heat exchanger has a distance between a lower end face of the fins and a center of a lowermost heat transfer tube of the outdoor side heat exchanger which is greater than a distance between an upper end face of the fins and a center of an uppermost heat transfer tube of the outdoor side heat exchanger, and
• wherein each interval between centers of heat transfer tubes adjacent to each other of the outdoor side heat exchanger is equivalent to a sum of the distance between the lower end face of the fins and the center of the lowermost heat transfer tube of the outdoor side heat exchanger, and the distance between the upper end face of the fins and the center of the uppermost heat transfer tube of the outdoor side heat exchanger.