For 2026, a mini split with a SEER2 rating around 21 offers solid energy...

https://wiki-velo.win/index.php/Will_a_DIY_Mini_Split_Heat_My_House_Down_to_-13%C2%B0F%3F

For 2026, a mini split with a SEER2 rating around 21 offers solid energy savings without skyrocketing costs—expect $2,000 to $3,000 for a basic 12,000 BTU unit