MRCOOL’s 24 SEER2 and Zone Air’s 23 SEER2 DIY mini splits boil down to winter...

https://wiki-coast.win/index.php/What_Maintenance_Do_DIY_Mini_Splits_Need_Each_Month%3F

MRCOOL’s 24 SEER2 and Zone Air’s 23 SEER2 DIY mini splits boil down to winter value: choose MRCOOL for heating above -15°F, or Zone Air Hyper Heat for warmth down to -22°F. Buy for your coldest nights, not just the efficiency rating, in your area.