For 2026, the best DIY cold-climate mini splits offer impressive efficiency...

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

For 2026, the best DIY cold-climate mini splits offer impressive efficiency with up to 24 SEER2 and reliable heating down to -22°F. Expect line sets between 8 and 75 feet for flexible installs