For 2026, DIY cold-climate units from Zone Air and MRCOOL merit a close look....

https://www.re-thinkingthefuture.com/article/best-diy-mini-split-for-cold-climate-heating-in-2026/

For 2026, DIY cold-climate units from Zone Air and MRCOOL merit a close look. Compare -22°F heat, SEER2, line-set fit, and power. Check your room load and winter lows; read the install guide first