For 2026, compare DIY mini splits by more than efficiency: check line-set...

https://evelynsexpertcolumns.brightsora.com/posts/does-cooper-amp-hunter-void-the-warranty-if-i-install-it-myself

For 2026, compare DIY mini splits by more than efficiency: check line-set length, cold-weather performance, noise, and parts access. A 24 SEER2 rating looks good, but an 8-75 ft line set and a -22 F rating may matter more in daily use.