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If the outdoor air conditioner needs replacing, can we re-use the old indoor unit?

April 26, 2017air conditioner indoor Needs Outdoor re-use replacing

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If the outdoor air conditioner needs replacing, can we re-use the old indoor unit?

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All manufacturers require that their equipment be installed as a “matched” system. In fact, many manufacturers state in their literature that they will void the warranty if an old indoor unit is used. A new 13 SEER air conditioner used with a 15 year old indoor unit will have an actual operating SEER of approximately 8 or 9. So, you will loose efficiency, increase maintenance problems, and possibly shorten the life of the system by mismatching a system.