In 2026, top DIY cold-climate mini splits offer up to 24 SEER2 efficiency and...

https://www.grandmashousediy.com/best-diy-cold-climate-mini-split-hyper-heat-models-compared-mrcool-vs-cooper-hunter-vs-zone-air-2026/

In 2026, top DIY cold-climate mini splits offer up to 24 SEER2 efficiency and heating that works down to -22°F. Most units fit 8-75 ft line sets, making installs flexible