For a 2026 DIY cold-climate mini split, compare Zone Air and MRCOOL on...

https://stephensimpressivejournals.tearosediner.net/why-do-diy-mini-split-articles-say-no-tools-but-still-mention-gauges

For a 2026 DIY cold-climate mini split, compare Zone Air and MRCOOL on low-temperature heating, line-set length, and wiring needs—not just price. Some MRCOOL models operate down to -22°F; check each unit’s installation requirements before choosing.