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What if the old indoor unit still functions properly, but the outdoor air conditioner needs to be replaced?

April 26, 2017air conditioner functions indoor Needs Outdoor properly

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What if the old indoor unit still functions properly, but the outdoor air conditioner needs to be replaced?

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All manufacturers require that their equipment be installed as a “matched” system and will void the warranty if the old indoor unit is used. As we have been discussing SEER, you need to know that an old (~15 year-old) indoor unit used with a new 13 SEER air conditioner will actually operate at only 9 or 10 SEER. Therefore, you are losing efficiency and you may be increasing maintenance problems. This mismatch may shorten the life of your system.