Performed preventative maintenance on a Lennox AC system. Model number: EL16XC1060230 A02. Serial number: 5819A06374. Upon arrival the unit was off. I turned the unit on at the thermostat. Went downstairs to the unit and watched it run. Turned the unit off at the switch. Removed the panel to the evaporator coil. Inspected the coils for any dirt build up. Poured water into the condensate trap and watched the water drain properly. Poured water into the condensate pump and watched the water pump out properly. Removed the panels to the furnace. Checked all electrical connections to make sure they were secure. Checked the blower motor and fan for any dust build up. Changed the 20x25x1 filter. Took an amp draw for the motor. Running within the manufacture’s specs. Placed the panels back on the unit and watched it run. Went outside to the condenser and watched it run. Checked the coils for any dirt build up. Removed the panel and brushed out any spiderwebs. Checked the contactor and capacitor