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

https://mighty-wiki.win/index.php/Is_SEER2_the_Same_Thing_as_Cooling_Power_on_a_Mini_Split%3F

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