Arrived to do a performance maintenance. Set up for combustion analysis temperature split and static pressure tests. Verified operation of all mechanical and electronic components of the furnace. Checked blower for cleanliness and to see if there is any play in the bearings. Checked systems heat exchanger to ensure proper venting of flue gas. Verified operation of the humidifier. Spoke with homeowners about the condition of the system. With homeowners approval replaced the humidifier panel. Tested humidifiers operation to ensure it will work without leaking. Furnace and humidifier are operational at this time.