Comparing 2026 DIY mini splits? MRCOOL’s 24 SEER2 tops Zone Air’s 23 SEER2 for...

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Comparing 2026 DIY mini splits? MRCOOL’s 24 SEER2 tops Zone Air’s 23 SEER2 for efficiency, but Zone Air may be the better value above -15°F. Need heat in colder weather? Hyper Heat operates down to -22°F.