DIY mini split comparison for 2026: MRCOOL has 24 SEER2; Zone Air, 23 SEER2....

https://wiki-byte.win/index.php/If_My_Winter_Goes_Lower_Than_-22%C2%B0F,_What_Backup_Heat_Should_I_Plan_For%3F

DIY mini split comparison for 2026: MRCOOL has 24 SEER2; Zone Air, 23 SEER2. Pick MRCOOL for value where winters stay above -15°F, or Zone Air Hyper Heat for heating down to -22°F. Your winter lows make the call for your home and climate.