Choosing a DIY mini split in 2026? MRCOOL’s 24 SEER2 tops Zone Air’s 23, but...
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Choosing a DIY mini split in 2026? MRCOOL’s 24 SEER2 tops Zone Air’s 23, but the real choice is best value above -15°F or Hyper Heat that keeps working down to -22°F. Check your winter lows, then choose the unit that fits—not just the higher rating.