Performed preventative maintenance for a Lennox ac system. Model #14ACX-060-230-14, serial #1916A23233. Upon arrival the thermostat was turned off. I powered down the system and removed the access panel. The evaporator coils are clean and in good condition. I tested the drain pan and drain line with several bottles of water to ensure that there are no leaks or clogs in the system. I replaced the 201 air filter supplied by the homeowner. Checked all electrical connections to ensure that they are secure and in good condition. The blower motor and wheel is clean as well. I re attached the access panels and powered the system back up. I called for ac and observed the system starting normally. The condenser coils are in fair condition. The condenser amp draws are 10.03 for the compressor and .24 for the fan. The temperature split is at a 20° differential. The system is operating properly at this time. No charge homeowner is a CCM.