In 2026, the best DIY cold-climate mini splits hit 24 SEER2 efficiency and...

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

In 2026, the best DIY cold-climate mini splits hit 24 SEER2 efficiency and operate down to -22°F, making them ideal for harsh winters. Most kits come with 8-75 ft line sets, covering a wide range of setups