In 2026, the best DIY mini splits for cold climates deliver up to 24 SEER2...

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

In 2026, the best DIY mini splits for cold climates deliver up to 24 SEER2 efficiency and operate reliably down to -22°F. Models with 8-75 ft line sets let you customize your install, saving $1,500-$3,000 on professional fees