For 2026, compare MRCOOL at 24 SEER2 with Zone Air at 23 SEER2. Choosing a DIY...

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For 2026, compare MRCOOL at 24 SEER2 with Zone Air at 23 SEER2. Choosing a DIY mini split? MRCOOL is the better value when winter lows stay above -15°F; Zone Air Hyper Heat handles heating down to -22°F