Water furnace 3 series heating system tune up maintenance and cleaning Minor service & run test of Aprilaire 600 bypass humidifier with automatic controls Service humidifier drain pump Shop-Vac all equipment and blow out air coil drain trap Test run all equipment in multi-stage heat pump heating mode and auxiliary heat *Indoor air coil has pretty extensive compacting and surface matting of air debris restricting the equipment operation and airflow. Recommend three step air coil chemical cleaning (see pics) Ecobee thermostat is functioning correctly for heating mode however homeowner says it is continually searching for remote sensors that are not in the house