Southwest Regional Efficiency Standards
2023 Southwest Region Highlight
Split air conditioners installed in the southeast region must achieve a 15.0 SEER rating. Up from 14.0 SEER.
Below are the Southwest Region’s minimum efficiency standards for Split Air Conditioners, Split Heat Pumps and Packaged Units effective January 1, 2023.
Compliance is based on date of installation. Supersedes federal minimum for split and package air conditioners. Includes the following states: Arizona, California, Nevada and New Mexico.
|Residential Air Conditioners||< 3.5 Tons||14.3 SEER2 (15 SEER)|
|≥ 3.5 Tons||13.8 SEER2 (14.5 SEER)|
|Heat Pumps||14.3 SEER2 (15 SEER)|
|Package AC||13.4 SEER2 (14 SEER)|
|Package Heat Pump||13.4 SEER2 (14 SEER)|
Effective Dates: 1/1/2023 and after
Sell-through deadlines vary by product line and region.
|Product Type||Region||Governing Date for Change|
|Split A/C||Southwest||Date of Installation|
|Split HP||All||Date of Manufacture|
|Package AC||Southwest||Date of Installation|
|Package HP||All||Date of Manufacture|