If you’re thinking about a mini split heat pump for a smaller space, 110V/115V...

https://www.joint-bookmarks.win/thinking-about-a-110v-or-115v-mini-split-heat-pump-these-units-usually-handle

If you’re thinking about a mini split heat pump for a smaller space, 110V/115V models with 9k-12k BTU are a solid fit. They run off a standard 15A dedicated circuit and often deliver efficient heating down to -13°F