Arrived on site to preform maintenance but system was not working properly since the morning. Found 2001 Rheem heater non operational due to failed inducer motor. Indoor blower is leaking oil as well. Flame sensor was rusted. Unit is cover in rat droppings at this time due to rodents. Clients are not in a position to replace due upcoming weddings. Clients wil op for mandatory repair for meanwhile and understand that these repair will not guarantee extra life. Inducer was ordere upon departure. Do not recommend running unit.