Arrived to do a dual performance maintenance. Used thermostat to control the system. Set system to heating and started inspection with the furnace. Performed combustion analysis to ensure a safe and efficient flame. Tuned the gas valve to bring the combustion gasses into factory specifications. Verified operation of the humidifier. Found that the water panel is heavily coated in calcium buildup and the solenoid valve has a restriction to the flow of water. Verified operation of all mechanical and electronic components. Found that the capacitor for the blower was performing well outside factory specifications. Cleaned and retested the flame sensor. Measured airflow for combustion air. Checked heat exchanger for damage to ensure proper venting of flue gasses. Checked blower wheel for cleanliness and to see if there is any play in the bearings. Measured a temperature rise. Performed an electronic gas leak search. Switched system to cooling. Measured the temperature split between return an