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

https://emmasnewjournal.talesignal.com/posts/do-i-need-a-dedicated-circuit-for-a-mini-split-heat-pump

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.