For 2026, the best DIY cold-climate mini splits deliver up to 24 SEER2...

https://brooksfznx367.theburnward.com/is-a-diy-mini-split-legal-to-install-without-an-hvac-license

For 2026, the best DIY cold-climate mini splits deliver up to 24 SEER2 efficiency and heat down to -22°F, keeping homes cozy all winter. Most units support 8-75 ft line sets, making installation flexible