Arrived onsite for heating maintenance 3 gas fired furnaces: 2 in basement and 1 in the attic. Also observed humidifier that required maintenance. Basement Furnace system #1 (Carrier): Turn heat on and confirmed operation. Changed 20x25x4 filter provided by climate plus. Brushed and Wiped down furnance blower cabinet and gas burners. Burners fired and are in good working order. No visual impingement detected. Checked electrical. Cleaned the flame sensor. Measure temperature rise at 42 degrees. System is operating as it should. Note that the hard water buildup observed on the humidifier is excessive. May need to replace humidifier tray and water panel next year. Also, homeowner would benefit from adding an improved water treatment system.
