The SEER is the amount of cooling your system will deliver per dollar spent on electricity, as compared to other systems. For example, a 3-ton unit may have a SEER efficiency rating of 14, 15 or 16. The higher the SEER the more efficient the system will be. This is tech-speak for how energy efficient the products are.
In 2023, “SEER2” was introduced, which stands for Seasonal Energy Efficiency Ratio 2. Specifically, SEER2 is the total heat removed from the conditioned space during the annual cooling season. –The SEER2 Guide. The minimum SEER rating is being raised on a regional basis nationwide. SEER for most northern states will be raised to 14 with SEER2 at 13.4. In southern states, the minimum SEER rating will be 15 with SEER2 of 14.3.