For 2026, a 20 SEER2 mini split with a 115V plug-in option is a solid choice...

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

For 2026, a 20 SEER2 mini split with a 115V plug-in option is a solid choice for easy DIY installation. These units cool efficiently down to 5°F, perfect for mild climates