What Is SEER2 All About? What Happened to SEER?
In a Nutshell: SEER2 is the new DOE mandated standard efficiency metric that goes into effect January 1, 2023 which requires more stringent testing procedures than SEER thus lowering the SEER2 number to better replicate installation environments. Compared to SEER, SEER2 is roughly 4.5% lower of a number. Smaller does not mean worse, you are not losing efficiency. The new standards are actually i