SEER2 is the updated rating used to compare cooling efficiency under more realistic test conditions. A higher number generally means less energy needed for the same cooling output.
Efficiency only delivers value when the system is properly sized, installed, charged, and matched to the ductwork. Oversized equipment can short-cycle, while undersized equipment may struggle on peak days.
Legendary Services TX compares equipment tiers, comfort goals, and budget so replacement decisions are based on the home, not a one-size-fits-all sales pitch.