Reliability, functionality, efficiency - these are values that Rheem holds to the highest standards in the WeatherKing line of HVAC systems. Because coils make such a big difference in the efficiency of heating and cooling systems in your home, WeatherKing puts in the extra effort to make their coils dependable. The TCF coils feature aluminum fins bonded to internally grooved aluminum tubing with copper sweat refrigerant connections. The coil's unique "N" design maximizes performance while its condensate drain pan is made from high grade, heat resistant and corrosi