For 2026, the best cold-climate mini splits handle temps down to -22°F and...

https://delta-wiki.win/index.php/SEER2_vs_HSPF2:_Which_Matters_More_for_Winter_Heating%3F

For 2026, the best cold-climate mini splits handle temps down to -22°F and offer 24 SEER2 efficiency. Brands like Mitsubishi and Fujitsu top the list with reliable heating and cooling