North Region: SEER2 compliance is based on each individual system’s manufacture date.
| SEER | SEER2 | HSPF | HSPF2 | |
| AC | 14.0 | 13.4 | ||
| HP | 15.0 | 14.3 | 8.8 | 7.5 |
| SPP | 14.0 | 13.4 | 8.0 | 6.7 |
New Standards for Residential HVAC Units in 2023
The new standards require a no less than 14 SEER for residential systems in the northern part of the United States and 15 SEER in the southern part of the United States, where cooling loads are a larger share of home energy use.
HVAC manufacturers are in the process of testing existing models to determine their new efficiency ratings, as well as producing new models that comply with the 2023 regulations.
As the Larson Company receives updates from our suppliers, we will inform our dealers and update this page. We encourage you to save this page as a “favorite” and check frequently for new information as it becomes available.
- Minimum efficiency standard increasing (over 7%)
- New efficiency testing standards (SEER2, EER2, HSPF2) are more stringent
- 0.5” external static pressure (current testing is up to 0.3” E.S.P.)
- More accurately simulate real world home installations
- As a result, SEER2, EER2, and HSPF2 will all be lower
- SEER2 ratings approximately 5% lower
- SEER2 ratings approximately 4% lower
- >HSPF2 ratings approximately 15% lower (does not result in a loss of performance)
- During the transition, SEER and SEER2, EER and EER2, and HSPF and HSPF2 ratings will be published for all product lines
- All AHRI system matches will be updated to comply with the new standards|
Changes impact geographical regions differently.
Check out the charts below to find out how these changes impact equipment in your area.
Click to expand each selection
Southeast Region: HVAC systems in this region that do not meet the SEER2 requirements cannot be installed after January 1, 2023.
| SEER | SEER2 | HSPF | HSPF2 | |
| AC | 15.0 | 14.3 | ||
| HP | 15.0 | 14.3 | 8.8 | 7.5 |
| SPP | 14.0 | 13.4 | 8.0 | 6.7 |
Southwest Region: HVAC systems in this region that do not meet the SEER2 requirements cannot be installed after January 1, 2023.
| SEER | SEER2 | HSPF | HSPF2 | EER | EER2 | |
| AC | 15.0 | 14.3 | 12.2 | 11.7 | ||
| HP | 15.0 | 14.3 | 8.8 | 7.5 | ||
| SPP | 14.0 | 13.4 | 8.0 | 6.7 |