Installing a 3-zone DIY mini split can keep your home comfy year-round while...

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

Installing a 3-zone DIY mini split can keep your home comfy year-round while saving on energy bills, thanks to its high efficiency—some models hit a SEER2 rating of 24. With a heating rating down to -13°F, it reliably warms even cold spaces