MRCOOL vs. Zone Air in 2026: MRCOOL leads on efficiency at 24 SEER2 versus Zone...

https://evelynsexpertcolumns.brightsora.com/posts/how-do-i-mount-the-indoor-air-handler-so-it-s-level-and-doesn-t-rattle

MRCOOL vs. Zone Air in 2026: MRCOOL leads on efficiency at 24 SEER2 versus Zone Air’s 23. For the best value above -15°F, choose MRCOOL; for heating down to -22°F, Zone Air’s Hyper Heat is the better fit.