Preventative maintenance on Lennox gas furnace. System is equipped with all IAQ products including MERV 16 filter, bypass humidifier and Reme Halo whole house air purifier. Inspected burners/burner compartment, pulled/clean flame sensor, amperage checked on inducer and indoor blower. Reset iComfort thermostat correctly on sub-base. Homeowner advised that vinegar was added to pump to prevent build-up and does that on a monthly basis. Installed customer supplied MERV 16-16x25x5 air filter and installed company supplied #35 water panel. System is currently operating properly and ready for the season. Lennox Gas Furnace M#EL296UH090XV48C-04, S#5912K39242. Filter-MERV 16-16x25x5. #35 water panel during fall service. Optional quote left to have air duct cleaning done. Last service was 08/20/2020.