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

https://web-wiki.win/index.php/Is_a_DIY_Mini_Split_Legal_to_Install_Without_an_HVAC_License%3F

For 2026, top cold-climate mini splits hit up to 24 SEER2 efficiency and operate down to -22°F, perfect for harsh winters. DIY-friendly models with 8-75 ft line sets save homeowners $1,500-$3,000 on installation costs