For 2026, compare DIY mini splits: MRCOOL gives 24 SEER2; Zone Air, 23 SEER2....

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For 2026, compare DIY mini splits: MRCOOL gives 24 SEER2; Zone Air, 23 SEER2. The real choice is simple: want best value in temps above -15°F, or need Hyper Heat that keeps heating down to -22°F? Match the unit to your coldest nights and budget.