For 2026, top cold-climate mini splits deliver up to 24 SEER2 efficiency and...

https://record-wiki.win/index.php/SEER2_vs_HSPF2:_Which_Matters_More_for_Winter_Heating%3F

For 2026, top cold-climate mini splits deliver up to 24 SEER2 efficiency and heat down to -22°F, perfect for harsh winters. Most models support 8-75 ft line sets, giving flexible install options. DIYers save $1,500-$3,000 compared to pros