SmartComfort by Carrier 2T , 15 SEER (14. 3 SEER2 , DOE) Heat Pump ^ Scroll Compressor For Proven Reliability ^ Aluminum tube and fin coil for improved durability. ^ Factory charged with R-410A refrigerant ^ Filter drier supplied with every unit ^ SEER2 , EER2 , HSPF2 Compliant ^ Up to 15. 2 SEER2 ^ Mfg #R4H5S24AKAAA Smartcomfort By Carrier 2t , 15 Seer 14.