Performed preventative maintenance on a Lennox AC system. Model number: XC21-036-230-08. Serial number: XC21-036-230-08. Upon arrival the system was off. I turned the system on at the thermostat. Went downstairs to the unit and watched it run. Turned the unit off at the switch. Checked the humidifier to see if it was still running. Customer turned it off at the thermostat but wanted to verify. I turned the dial to summer. No water was coming out of the tube. 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. Removed 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. The filter is still good until Jan of 2024. Took an amp draw of the blower motor. Running within the manufacture’s specs. Placed the panels back in the unit a