2026 DIY mini split matchup: MRCOOL offers 24 SEER2; Zone Air, 23 SEER2. The...

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

2026 DIY mini split matchup: MRCOOL offers 24 SEER2; Zone Air, 23 SEER2. The key? Best value for temps above -15°F, or Zone Air Hyper Heat for heating down to -22°F. Choose based on your winter lows—not just efficiency or your home’s usual coldest nights.