Pumped down existing refrigerant to the condenser. Installed new Carrier evaporator coil with new TXV. Installed new liquid line filter drier. Pressure tested system with nitrogen and pulled vacuum. Built duct board transition between furnace and new coil. Rebuilt primary condensation drain. Cleared primary drain with CO2 and primed trap with water. Sealed connections with mastic and hardcast. Charged the system with R-410A refrigerant. Tested heating and cooling operation of system. Everything is working at completion of service.