Performed preventative maintenance on a Lennox AC system. Model number: 13ACXN030-230-19. Serial number: 1916D61117. Upon arrival the system was off. I turned the system on at the thermostat. Went downstairs to the system and watched it run. Turned the system off at the switch. Removed the panel to the evaporator coil. Inspected the coils for any dust build up. Poured water into the condensate trap and watched it drain properly. Poured water into the condensate pump and watched it pump out properly. R roved the panels to the furnace. Checked the electrical connection to make sure they were properly secure. Checked the blower motor and fan for any dust build up. Replaced the 16x20x1 filter supplied by the homeowner. Took an amp draw of the motor. Running within the manufacture’s specs. Placed the panels back in the unit and watched it run. Went outside to the command watched it run. Checked th coils for any dirt build up. Removed the panel. Checked the Conan’s capacitor. Both are runnin