Performed heating maintenance on a 2015 Trane 2 stage 96% efficient furnace running on propane Replaced filters Checked humidifier... it is not installed properly and as a result has nearly zero airflow through it. Shut it down completely (at humidistat and water valve) Humidifier will waste water and produce negligible humidification performance Furnace blower is clean Wiring in good shape Removed burner box cover Inspected burners Removed flame sensor and clesned Reinstalled flame sensor and burner cover Run tested furnace in high and low fire Ignition is reliable across the burners Gas pressures are correct Temperature rise is within mmanufacturer's specification range Inspected exhaust piping, no signs of leaks Condensate lines show no signs of leaks No water leaks inside the furnace No concerns found on today's visit
