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

https://spencersexcellentcolumn.scriblorax.com/posts/zone-air-custom-line-set-8-to-75-ft-is-it-a-big-deal-for-your-mini-split-install

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