Single-Package Rooftop Standard Efficiency Heat Pump Units 3 to 20 Nominal Tons 48/50TC WeatherMaster Rooftop Unit with Puron Refrigerant WeatherMaker® 50TCQ rooftop units were designed to be easy to install, maintain, and operate, with customer-requested features including a gage port, centralized control center, plug-and-play accessory board, "no-strip screw" collars, and handled access panels. Units are field-convertible to horizontal airflow without special adapter curbs or kits, making it easy for the installer to adjust to unexpected jobsite complications. Units are pre-wired and pre-charged with environmentally sound Puron (R-410A) refrigerant and are factory tested. Performance Features Puron® (R-410A) HFC refrigerant ASHRAE compliant and Energy Star qualified Single-stage capacity control (sizes 04 to 07) Two-stage cooling capacity control (sizes 08 to 24) SEERs up to 13.4 EERs up to 11.2 IEERs up to 12.2 HSPFs up to 7.7 COPS up to 3.4 Exclusive non-corrosive composite condensate pan in accordance with ASHRAE 62 Standard, sloping design; side or center drain Pre-painted exterior panels and primer-coated interior panels tested to 500 hours salt spray protection Acutrol™ refrigerant metering system Fully insulated cabinet