Comparing DIY cold-climate mini splits for 2026? Zone Air and MRCOOL are worth...

https://spencerssmartword.quillnesty.com/posts/why-do-hvac-techs-refuse-to-service-self-installed-mini-splits

Comparing DIY cold-climate mini splits for 2026? Zone Air and MRCOOL are worth a look. Check low-temperature heating ratings, included line-set length, and panel requirements; one model is rated to -22°F. Proper sizing still matters for steady heat.