For 2026, MRCOOL delivers 24 SEER2 versus Zone Air’s 23 SEER2. The choice comes...

https://spencerssmartword.quillnesty.com/posts/if-my-line-set-run-is-long-is-zone-air-s-75-ft-option-a-big-deal

For 2026, MRCOOL delivers 24 SEER2 versus Zone Air’s 23 SEER2. The choice comes down to climate: MRCOOL is the value pick above -15°F, while Zone Air Hyper Heat keeps heating down to -22°F.