If you’re tackling a multi-room upgrade, a 3-zone mini split is a solid choice...

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

If you’re tackling a multi-room upgrade, a 3-zone mini split is a solid choice for targeted comfort without breaking the bank. With SEER2 ratings around 24, these systems run efficiently through summer and winter, even down to -13°F