50ZHC 14 SEER Single-Packaged Heat Pump System with R-410A Refrigerant Single Phase 2 to 5 Nominal Tons (Sizes 024-060) 50ZHC 14 SEER Single-Packaged Heat Pump System with R-410A Refrigerant Single Phase 2 to 5 Nominal Tons (Sizes 024-060)