Importance

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Abstract

An air conditioner includes an outdoor unit including a first heat exchanger and an indoor unit including a second heat exchanger. The first heat exchanger includes a first heat transfer tube and a plurality of first fins. The second heat exchanger includes a second heat transfer tube and a plurality of second fins. The first heat transfer tube, the first fins, the second heat transfer tube, and the second fins are made of aluminum or an aluminum alloy. A first sacrificial layer is provided on a surface of the first heat transfer tube. The first sacrificial layer is lower in potential than a base material of the first heat transfer tube and lower in potential than the first fins. A fin pitch of the first fins is larger than a fin pitch of the second fins.

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First Claim