48VT Comfort 14 SEER Single Phase 2-5 Nominal Tons (Sizes 24-60) Three Phase 3-5-Nominal Tons (Sized 36-60) Single-Packaged Hybrid Heat Dual Fuel System with Puron Refrigerant 48VT Comfort 14 SEER Single Phase 2-5 Nominal Tons (Sizes 24-60) Three Phase 3-5-Nominal Tons (Sized 36-60) Single-Packaged Hybrid Heat Dual Fuel System with Puron Refrigerant