Performed 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. Recommend blower wheel cleaning to ensure that blower fan is pushing maximum airflow through ductwork to avoid any issues revolving around airflow. Also performed a 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