Single-Package Rooftop High Efficiency Electric Cooling Units with Optional Electric Heat 3 to 25 Nominal Tons 48HC Weathermaster Rooftop Unit 50HC WEATHERMASTER® rooftop unit were designed by customers for customers. With a gauge plug, centralized control center, plug & play accessory board, "no-strip screw" collars, and handled access panels, weve made the unit easy to install, easy to maintain, and easy to use. Units are pre-wired and pre-charged with environmentally sound Puron® (R-410A) refrigerant at the factory. The units are factory tested in cooling mode. Performance Features Puron® (R-410A) HFC refrigerant ASHRAE 90.1 and Energy Star compliant Single-stage capacity control (sizes 04 to 07) Two-stage cooling capacity control (sizes 08 to 28) SEERs up to 15.6 EERs up to 12.2 IEERs up to 13.4 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 TXV refrigerant metering device on each circuit with removable power element Fully insulated cabinet Enhanced copper tube and aluminum fin designed condenser and evaporator coils. Special coated coils also available