For 2026, compare MRCOOL and Zone Air: 24 SEER2 vs 23 SEER2. MRCOOL is best...

https://blogfreely.net/rothesqlmw/should-i-buy-mrcool-for-the-cold-or-zone-air-for-the-value

For 2026, compare MRCOOL and Zone Air: 24 SEER2 vs 23 SEER2. MRCOOL is best value above -15°F. Need heat in deeper cold? Zone Air’s Hyper Heat runs down to -22°F. Pick based on your winter lows, not just the small efficiency gap.