SEER 2 Southwest Requirements

Central Air Systems To meet SEER2 requirements in the southwest region, residential central air systems below 45,000 BTU must have a SEER2 rating of 14.3 (15.0 SEER) and 11.7 EER2 (12.2 EER). Residential central air systems 45,000 BTU and above must have a SEER2 rating of 13.8 (14.5 SEER) and 11.2 EER2 (11.7 EER).

Heat Pumps

Existing 14.0 SEER heat pumps built prior to January 1, 2023 may still be sold and installed on or after January 1, 2023. Heat pumps in any region must meet 14.3 SEER2 (15.0 SEER) and 7.5 HSPF2 (8.8 HSPF) requirements.

Packaged ACs, Heat Pumps, Gas Electrics, and Dual-Fuel HPs Current SEER ratings of single packaged units are 14.0 SEER and 8.0 HSPF. These will remain the same despite other regulatory changes. However, these units will still need to adhere to the new testing measures and meet SEER2 rating requirements of 13.4 SEER2 and 6.7 HSPF2.