Performed preventative maintenance for a Lennox system. The evaporator coil’s are clean and in good condition. Tested the drain pan, drain line and condensate pump with several cups of hot water. Replaced the Merv16 air filter that was severely clogged. Checked all electrical components needed for air conditioning to ensure that they are secure and in good condition. I observed the system starting normally. The amp draw for the blower motor is at 2.6. The temperature split is at a 19. The condenser coil’s are clean and in good condition. The amp draws for the condenser are .66 for the fan and 5.7 for the compressor. The refrigerant pressures are 105/218. These are normal readings for 410-A refrigerant within ambient temperature of 57°. The system is operating properly at this time.