For 2026, MRCOOL’s 24 SEER2 is the value pick for temperatures above -15°F....

https://www.bookmark-jungle.win/2026-diy-mini-split-matchup-mrcool-gives-24-seer2-zone-air-23-pick-mrcool

For 2026, MRCOOL’s 24 SEER2 is the value pick for temperatures above -15°F. Zone Air’s 23 SEER2 trades a point of efficiency for Hyper Heat down to -22°F. Choose based on your winter lows.