Furnace precision tune up; clean and tune up furnace; clean burners, test ignition components, adjust gas level, test safety circuit, check indoor motors, checked all electrical components, tested indoor air flow, checked heating temperatures, and tested overall furnace operation. Air Distribution system is reducing airflow and efficiency. Combustion removal system is louder than it should be. Sounds like the bearings are failing. Furnace replacement is recommended. Humidifier precision tune up and cleaning. Remove current water pad, clean off pad housing and water distributor. Clean out humidifier box. Clear out drain line. Replace with new water pad. Test operation.