For 2026, top DIY cold-climate mini splits offer efficiency around 24 SEER2 and...

https://super-wiki.win/index.php/Cooper_and_Hunter_HSPF2_13_vs_MRCOOL_HSPF2_10:_Real_Differences_for_Cold-Climate_Mini_Split_Buyers

For 2026, top DIY cold-climate mini splits offer efficiency around 24 SEER2 and reliable heating down to -22°F. Most kits support 8-75 ft line sets, allowing flexible placement