I am selling my Armtrong Air Conditioner Top Features of the 4SCU13LB Up to 14 SEER Efficiency Rating* SEER (Seasonal Energy Efficiency Ratio) rates the energy efficiency of your cooling equipment. The higher the SEER rating, the more efficiently your unit operates, saving you money on utility bills that has been with me for four summers and this year I changed my unit for a Inverter Heat Pump.
