Performed preventative maintenance for a high efficiency Lennox furnace model #EL296UH090XV60C-03, serial #5912H28991. I powered the system down and removed the access panels. Removed and cleaned carbon off of the flame sensor and cleaned out the burners and burner box. The homeowner will replace the air filter when it is delivered Merv16 16x25x5. Checked the pressure switch for clogs and tested the drain line and condensate pump with several bottles of water to ensure that there are no leaks or clogs. Performed humidifier service for a healthy climate humidifier. I removed and replaced the old #35 water panel and cleaned out the tray and housing. Checked all electrical connections to ensure that they are secure and in good condition. I powered the system back on and called for heat. Took a combustion analysis test and received the following readings, o2 is 11.3% and the co levels are 14ppm. The inducer motor amp draw is .48 and the blower motor amp draw is 5.10. The supply temp is 124