Air handler #3 (Office) Found a restriction in the suction line at condenser. I replaced the evaporator coil and thermal expansion valve in the air handler. Pressure tested system with 350 pounds of nitrogen to check for leaks, pulled system down on a deep vacuum, recharged with a factory charge of 15 pounds of refrigerant, and fired the system off. The system is now cooling properly at this time. This repair is covered under their 2 year labor, 10 year parts warranty.