Installing a 3-zone DIY mini split is a smart way to keep your home comfy...

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

Installing a 3-zone DIY mini split is a smart way to keep your home comfy without blowing your budget. With heating ratings down to -13°F, these systems keep you warm even in harsh winters