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

https://wiki-velo.win/index.php/What_Does_HSPF2_Mean_for_Heating_Costs_on_a_Mini_Split%3F

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