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 versus Zone Air’s 23, but the key choice is best value above -15°F or Zone Air Hyper Heat that keeps working down to -22°F. Match the system to your winter lows.