I have a 12 year old 12,000 BTU air conditioner that is now occasionally making a high pitch sound and am asking what could be the problem?
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I have a 12 year old 12,000 BTU air conditioner that is now occasionally making a high pitch sound and am asking what could be the problem?
I would guess a bearing.
I'M guessing this is a window unit. Could be a fan bearing or a fan cage hitting the housing.
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