Comparing 2026 DIY mini splits? MRCOOL delivers 24 SEER2, while Zone Air offers...

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Comparing 2026 DIY mini splits? MRCOOL delivers 24 SEER2, while Zone Air offers 23 SEER2. The choice is straightforward: prioritize value in climates above -15°F, or opt for Hyper Heat that keeps working down to -22°F.