Comparing MRCOOL and Zone Air DIY mini splits for 2026? MRCOOL offers 24 SEER2...

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Comparing MRCOOL and Zone Air DIY mini splits for 2026? MRCOOL offers 24 SEER2 efficiency versus Zone Air’s 23. The key choice: best value for climates above -15°F, or Hyper Heat performance down to -22°F.