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

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Comparing MRCOOL and Zone Air DIY mini splits for 2026? MRCOOL’s 24 SEER2 beats Zone Air’s 23, but the key choice is better value above -15°F or Zone Air Hyper Heat, rated to heat down to -22°F. Choose for your winter lows.