If you’re tackling a 3-zone DIY mini split, you’re looking at solid efficiency...

https://www.e-architect.com/articles/best-3-zone-diy-mini-split

If you’re tackling a 3-zone DIY mini split, you’re looking at solid efficiency without calling in expensive pros. Many kits run between $4,100 and $5,600, and with a heating rating as low as -13°F, you’re covered even on chilly days