For a straightforward 2026 install, look for a mini split with a SEER2 rating...

https://www.strobe-bookmarks.win/for-2026-look-for-a-mini-split-with-at-least-a-20-seer2-rating-for-efficiency

For a straightforward 2026 install, look for a mini split with a SEER2 rating around 20 for good efficiency. Choose a model that runs on a 115V plug-in to avoid complex electrical work