For 2026, compare DIY mini splits by more than SEER2: check line-set length,...

https://oscar-wiki.win/index.php/Is_Coiling_Extra_Copper_Behind_the_Condenser_a_Problem%3F

For 2026, compare DIY mini splits by more than SEER2: check line-set length, cold-weather performance, and what installation really includes. A 24 SEER2 rating looks good on paper, but an 8-75 ft line set may fit your room better.