Comparing MRCOOL and Zone Air DIY mini splits for 2026? MRCOOL’s 24 SEER2 edges...

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Comparing MRCOOL and Zone Air DIY mini splits for 2026? MRCOOL’s 24 SEER2 edges out Zone Air’s 23, but the real choice is value for climates above -15°F or Hyper Heat performance down to -22°F.