The new efficiency standards are here. What SEER2 actually means for your energy bill.
As of 2023, the Department of Energy replaced SEER with SEER2 — a stricter testing standard designed to reflect real-world duct static pressure. Same idea, tougher test.
The short version
Higher SEER2 = more cooling per watt = lower electric bill. The Southeast minimum for new equipment is 14.3 SEER2 (roughly equivalent to the old 15 SEER).
What we recommend in Florida
- 14.3–15 SEER2 for rental properties or short-term ownership
- 16–17 SEER2 for most homeowners — best value per dollar
- 18+ SEER2 (variable-speed) if you're staying 7+ years or want the best humidity control
The catch nobody tells you
A 20 SEER2 system installed on leaky ductwork performs like a 14. Efficiency ratings assume the ducts are sealed and the system is sized correctly. Spend on the install, not just the label.