For 2026, MRCOOL’s 24 SEER2 edges Zone Air’s 23 SEER2. The choice is...

https://fast-wiki.win/index.php/MRCOOL_Retailers_Won%E2%80%99t_Take_Returns%E2%80%94What_Should_I_Check_Before_Buying%3F

For 2026, MRCOOL’s 24 SEER2 edges Zone Air’s 23 SEER2. The choice is straightforward: pick MRCOOL for value if your winters stay above -15 F; choose Zone Air’s Hyper Heat if you need heating down to -22 F.