Comfort 13 Packaged Air Conditioner System with Puron® Refrigerant Sizes 018 Thru 060 Single and three phase STANDARD FEATURES Puron® refrigerant an environmentally friendly alternative 13.0 SEER and 11 EER at 95 F° OD Built-in Thermostatic Expansion Valve (TXV) improves overall efficiency Multi-speed, direct drive indoor blower is standard on all models Envirotuff rust-proof base with integrated drain Vertical condenser fan discharge Sound ratings as low as 72dB Copper tube/aluminum fin condenser and evaporator coils UL and UL Canada certified Scroll compressors on all sizes Wire grille High and low pressure switches to protect compressor Filter drier to protect the refrigerant system Metal, insulated duct covers that remain in place for downshot applications