In 2026, top cold-climate mini splits hit 24 SEER2 efficiency and offer...

https://online-wiki.win/index.php/How_Big_of_a_Hole_Do_I_Drill_for_a_Mini_Split_Line_Set%3F

In 2026, top cold-climate mini splits hit 24 SEER2 efficiency and offer reliable heat down to -22°F. DIYers save $1,500-$3,000 on install costs by choosing units with included line sets supporting 8-75 ft runs