It is currently in its 14th heat season Inducer assembly replaced after 8 years 2014 Drain trap replaced after 9 years 2015 I can not remove the flame sensor to clean it as it’s rusted on to the burner box Wire brushed gas burners Checked igniter Checked heat exchanger- some corrosion showing Adjusted hi and lo gas pressure to Oem specs System operating within parameters at this time This system has no warranty, homeowner to pay full costs