A 3-zone DIY mini split lets you customize comfort room by room without...

https://lima-wiki.win/index.php/Do_I_Need_Backup_Heat_If_My_Mini_Split_Is_Rated_to_-13%C2%B0F%3F

A 3-zone DIY mini split lets you customize comfort room by room without breaking the bank. With a heating rating as low as -13°F and SEER2 efficiency up to 24, you’ll stay cozy even in harsh winters