For a 2026 DIY mini-split, compare more than SEER2. A 24 SEER2 rating looks...

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For a 2026 DIY mini-split, compare more than SEER2. A 24 SEER2 rating looks good on paper, but line-set length and cold-weather output matter at home. Check whether the kit includes an 8-75 ft line set and what the warranty requires.