Shopping DIY mini splits in 2026? MRCOOL delivers 24 SEER2, while Zone Air...

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Shopping DIY mini splits in 2026? MRCOOL delivers 24 SEER2, while Zone Air offers 23 SEER2. Choose MRCOOL for value when temps stay above -15°F; go with Zone Air Hyper Heat if you need heating down to -22°F.