Arrived to do a performance maintenance. Set up for combustion analysis temperature split and static pressure tests for each system. Verified operation of all mechanical and electronic components of each furnace. Checked blowers for cleanliness and to see if there is any play in the bearings. Checked both systems heat exchangers to ensure proper venting of flue gas. Verified operation of the humidifier. Fixed the wiring for the humidifier to allow it to work. With homeowners approval replaced the furnace filters and the humidifier panel. Renewed maintenance membership. Both furnaces and the humidifier are operational at this time.