In 2026, DIY cold-climate mini splits offer solid efficiency with models...

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

In 2026, DIY cold-climate mini splits offer solid efficiency with models hitting up to 24 SEER2 and reliable heating down to -22°F. They support line sets between 8 and 75 feet, giving flexible placement