Manufacturer Lennox Model # XP17-048-230-09 Serial # 5815B02982 Completed a preventative maintenance on a 8 year old Lennox unit. I changed the 20x24x1 customer supplied filter. The temperature split was 18, I made sure condensate pump is working. Then I went outside and did an amperage reading on the compressor (8.8) amps the condenser fan motor running at (.4) amps made sure capacitor and contactor are both working properly. System is operating properly.