For 2026 DIY cold-climate mini splits, expect models with efficiency up to 24...

https://www.hometalk.com/member/259583614/gussie1580272

For 2026 DIY cold-climate mini splits, expect models with efficiency up to 24 SEER2 and reliable heating down to -22°F. Line set lengths range 8 to 75 feet, letting you customize installs