Lennox Model # XP21-036-230-06 Serial # 5815C17414 Completed a preventative maintenance on a Lennox unit. I changed the 20x20x1 customer supplied filter. Then I took a temperature split and the reading is 20. I water test the evaporator coil drain pan and made sure condensate pump is working. After that I performed a amperage readings on the compressor 6.7 amps and the condenser fan motor 0.6 amps. The capacitor and contactor are both operating properly at this time. System is operating properly properly.