For 2026, MRCOOL’s 24 SEER2 DIY mini split leads on value in climates that stay...

https://oliviamaids.com/can-a-multi-zone-diy-system-heat-and-cool-a-whole-house/

For 2026, MRCOOL’s 24 SEER2 DIY mini split leads on value in climates that stay above -15°F. Zone Air’s 23 SEER2 Hyper Heat costs more, but keeps heating down to -22°F. Choose based on how cold your winters get.