Comparing DIY cold-climate mini splits for 2026? We look at Zone Air and MRCOOL...

https://donovansultimatewords.opalvector.com/posts/do-i-need-backup-heat-if-my-mini-split-is-rated-to-13degf

Comparing DIY cold-climate mini splits for 2026? We look at Zone Air and MRCOOL for low-temperature heating, line-set details, and install requirements. Some models are rated to -22°F, but sizing, electrical needs, and included parts still matter.