In 2026, top cold-climate mini splits deliver efficient heating down to -22°F...

https://wiki-net.win/index.php/What_Does_SEER2_24_Actually_Mean_for_My_Electric_Bill%3F

In 2026, top cold-climate mini splits deliver efficient heating down to -22°F with SEER2 ratings up to 24, cutting energy costs smartly. DIYers save $1,500-$3,000 on professional installs by handling 8-75 ft line sets themselves