For 2026, the best DIY cold-climate mini splits deliver efficient heating down...

https://cleaneverycorner.com/how-do-i-size-btus-per-square-foot-for-a-cold-climate-garage/

For 2026, the best DIY cold-climate mini splits deliver efficient heating down to -22°F with SEER2 ratings up to 24. These units support line sets from 8 to 75 feet, allowing flexible placement