48VT-C Comfort 14 SEER Single Packaged HYBRID HEAT Dual Fuel System with Puron Refrigerant Single Phase 2-5 Nominal Tons (Sizes 24-60) and Three Phase 3-5 Nominal Tons (Sizes 36-60) 48VT-C Comfort 14 SEER Single Packaged HYBRID HEAT Dual Fuel System with Puron Refrigerant Single Phase 2-5 Nominal Tons (Sizes 24-60) and Three Phase 3-5 Nominal Tons (Sizes 36-60)