Tackling a 3-zone DIY mini split lets you control comfort in multiple rooms...

https://city-wiki.win/index.php/Is_a_Zone_Air_36K_3-Zone_SEER2_24_System_Really_Enough_for_1,800_Sq_Ft%3F

Tackling a 3-zone DIY mini split lets you control comfort in multiple rooms without sky-high energy bills. Most systems boast a solid SEER2 rating around 24, keeping your electricity use in check