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

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Comparing DIY mini splits for 2026? MRCOOL’s 24 SEER2 edges Zone Air’s 23 SEER2. Choose MRCOOL for best value above -15 F; pick Zone Air Hyper Heat if you need heat down to -22 F. Your winter low—not one SEER2 point—should make the call.