HVAC
SEER2 ratings, explained for North Texas homes
SEER2 tells you how efficiently an AC cools over a season, but it is only one of the things that decide how well a system works in your home.
If you have priced an air conditioner or heat pump since 2023, you have seen SEER2 on every quote. It is the main efficiency rating for cooling, and it matters. It is also easy to read too much into.
This guide covers what the number measures, why it changed, what Texas requires for new systems, and what to look at alongside it when you compare quotes.
01What SEER2 measures
SEER2 stands for seasonal energy efficiency ratio, version 2. EPA's heat pump criteria page defines it as the total heat a system removes from your home over a cooling season, divided by the electricity it uses to do that. A higher number means more cooling for each unit of electricity.
Two related numbers often sit next to it on a spec sheet:
- EER2 compares cooling output to power draw at a single test condition, rather than across a whole season.
- HSPF2 is the heating version, used for heat pumps.
For a North Texas home, where cooling dominates the year, SEER2 is usually the first number people look at.
02Why SEER became SEER2
On January 1, 2023, federal efficiency ratings for home air conditioners and heat pumps moved from SEER to SEER2. The new test raises the external static pressure, meaning the resistance the system pushes air against, by up to five times, so lab results better reflect real ductwork. That comes from AHRI, the industry group behind the equipment rating directory.
Because the test is tougher, SEER2 numbers come out lower than old SEER numbers for the same equipment. So a SEER figure from an older quote cannot be compared directly with a SEER2 figure on a new one. Make sure every quote you line up uses SEER2.
The minimums rose along with the new test. AHRI says equipment that just meets the new minimums is about 7 percent more efficient than before, even though the number on the label looks similar or lower.
03The minimum in Texas
Federal standards set different floors by region. Texas sits in the Southeast region, and since January 1, 2023, new split-system central air conditioners installed here generally need at least 14.3 SEER2, according to the Department of Energy's regional guidance.
The same DOE guidance shows something worth knowing: ratings belong to a matched combination of outdoor and indoor units, not the outdoor box alone. The same condenser can carry a different rating depending on the indoor coil it is paired with. Ask for the rating of the full matched system you are buying, which you can look up in AHRI's directory.
04What SEER2 does not tell you
The rating is measured in a lab, and your home is not a lab. A high number will not fix:
- Wrong sizing. EPA's quality installation guidance warns that oversized equipment cycles too often, which hurts comfort and shortens its life. EPA's heat pump page says sizing should be confirmed with a Manual J load calculation.
- Leaky ducts. Ducts running through a hot attic can lose cooled air before it ever reaches a room.
- Airflow and refrigerant charge. Both need to be tested and set to the manufacturer's specs at install.
- Humidity control. EPA's installation guidance also notes that poor airflow can leave indoor air overly damp, and in a sticky North Texas spring that matters as much as the temperature.
- The house itself. An unsealed, under-insulated attic adds heat the system then has to remove.
That last point matters most here. Seal and insulate first, and the system you need may be smaller.
05How to compare quotes
Line up quotes by more than the headline number. A system with a slightly lower SEER2, sized with a proper load calculation and installed with tested airflow and sealed ducts, can serve you better than a higher number dropped into a leaky house. Ask each contractor to explain, in writing, how they arrived at the size they quoted.
At Static, we check the system, the ducts and the attic on one visit, then size the new heat pump or AC to the house after the fixes, not before. If your current unit has years left, we will say so and service it instead. Before any visit, our HVAC visit checklist lists what to gather. When you want a second look at a quote, book your free inspection.
