For a 2026 DIY mini split, compare more than SEER2: check line-set length,...

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For a 2026 DIY mini split, compare more than SEER2: check line-set length, low-temperature performance, and parts support. A 24 SEER2 model may save energy, but an 8-75 ft line set and a -22 F rating only matter if they fit your home and climate