In 2026, top cold-climate mini splits deliver efficient heating down to -22°F...

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 deliver efficient heating down to -22°F with SEER2 ratings up to 24, making them ideal for harsh winters. Models with 8-75 ft line sets fit various setups, saving DIYers $1,500-$3,000 on install costs