In 2026, a mini split with a SEER2 rating around 20 offers good efficiency...

https://www.omnihomeideas.com/hvac/top-easy-install-mini-split-systems-2026-best-brands-compared/

In 2026, a mini split with a SEER2 rating around 20 offers good efficiency without complicating your electric bill. Look for one that plugs into a standard 115V outlet if you want a DIY install