In 2026, top cold-climate mini splits hit 24 SEER2 and keep heating down to...

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 cold-climate mini splits hit 24 SEER2 and keep heating down to -22°F. DIYers can save $1,500-$3,000 on installation by handling line sets between 8 and 75 feet