SEER2 ↔ EER reference
A documented approximation, EER ≈ SEER × 0.9, lets you turn a seasonal SEER2 rating into a single-point EER for running-cost math. It is an estimate, not an exact identity. Convert any value with the EER↔SEER tool.
| SEER2 | Approx. EER (× 0.9) |
|---|---|
| 13 | 11.7 |
| 14 | 12.6 |
| 15 | 13.5 |
| 16 | 14.4 |
| 17 | 15.3 |
| 18 | 16.2 |
| 20 | 18.0 |
| 22 | 19.8 |
Documented approximation (EER ≈ SEER × 0.9), not an exact identity — EER is a single full-load point; SEER is seasonal.