This 2026 DIY cold-climate mini split comparison looks at Zone Air and MRCOOL...

https://tessatopmaid.com/is-a-concealed-ducted-mini-split-worth-it-for-a-cleaner-look/

This 2026 DIY cold-climate mini split comparison looks at Zone Air and MRCOOL for low-temperature heating, sizing, line-set kits, and install effort. Some models are rated to -22°F, but check electrical needs and included parts before buying.