2026 DIY mini split: MRCOOL vs Zone Air. MRCOOL: 24 SEER2; Zone Air: 23. The...

https://oliviamaids.com/can-a-multi-zone-diy-system-heat-and-cool-a-whole-house/

2026 DIY mini split: MRCOOL vs Zone Air. MRCOOL: 24 SEER2; Zone Air: 23. The choice? Best value above -15°F or Hyper Heat down to -22°F. Pick for your coldest days and budget, not the SEER2 gap alone—then size it right for comfort all year.