Performed the heating maintenance for both furnaces, replaced both of the 20x25x4 filters. Serviced the humidifier for the second / third floor furnace, start it up both furnaces and checked operation of all safety controls. Checked all wiring connections, checked the operation of the combustion blower motors. Check the heat exchangers and cleaned the flame sensors. Both furnaces are operating properly. I set the humidistat at 45% humidity to allow it to provide as much humidity as possible to the upstairs area. At some point we may want to look into adding a new humidifier for the basement furnace to help increase the humidity level in the winter.
