For a 2026 DIY mini split, compare more than SEER2: check the included line...

https://fair-wiki.win/index.php/Do_MrCool_Line_Set_Extension_Couplers_Leak_Over_Time%3F

For a 2026 DIY mini split, compare more than SEER2: check the included line set, low-temperature rating, and parts support. A 24 SEER2 rating looks good on paper, but an 8-75 ft line set and reliable service can matter more day to day.