In 2026, top cold-climate mini splits deliver efficient heating down to -22°F...

https://kilo-wiki.win/index.php/MRCOOL_DIY_Trustpilot_3.2_Out_of_5:_Should_I_Worry%3F

In 2026, top cold-climate mini splits deliver efficient heating down to -22°F with SEER2 ratings up to 24, making them ideal for harsh winters. Models with 8-75 ft line sets fit various setups, saving DIYers $1,500-$3,000 on install costs