Manufacturer Lennox Model # XC14-048-230-08 Serial # 5816G08974 Completed a preventative maintenance on 7 year old Lennox unit. The split temperature is 20. Changed 16x25x1 filter. Performed a amperage readings on the condenser fan motor and the compressor both are operating properly at this point. Cleaned condensate drain line and made sure it is working. System is operating properly at this point.