For 2026, a mini split with a SEER2 rating over 20 is a solid bet for efficient...

https://www.bookmark-step.win/for-2026-look-for-a-mini-split-with-at-least-a-20-seer2-rating-for-energy

For 2026, a mini split with a SEER2 rating over 20 is a solid bet for efficient cooling and heating. If you’re after easy DIY installation, look for models that run on a standard 115V plug