50VT Comfort 14 SEER Single Packaged Heat Pump Units with Puron Refrigerant Single Phase Units 2-5 Nominal Tons (Sizes 24-60)and Three Phase Units 3-5 Nominal Tons (Sizes 36-60) 50VT Comfort 14 SEER Single Packaged Heat Pump Units with Puron Refrigerant Single Phase Units 2-5 Nominal Tons (Sizes 24-60)and Three Phase Units 3-5 Nominal Tons (Sizes 36-60)