For a 2026 DIY mini split, compare more than SEER2: a 24 SEER2 rating looks...

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

For a 2026 DIY mini split, compare more than SEER2: a 24 SEER2 rating looks good on paper, but line-set length, cold-weather capacity, and parts support matter in daily use. Check whether the included 25 ft line set fits your layout before buying.