For a 2026 DIY mini-split heat pump comparison, MRCOOL’s 24 SEER2 edges Zone...

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For a 2026 DIY mini-split heat pump comparison, MRCOOL’s 24 SEER2 edges Zone Air’s 23 SEER2. The real choice: better value for heating above -15°F, or Zone Air Hyper Heat for operation down to -22°F. Match the low-temp rating to your climate.