Performed a preferred customer furnace cleaning. Cleaned the burners and the flame sensor. Checked the furnace heat exchanger. Wiped down the inside of the furnace. Checked the electrical. Cycled the furnace. Performed a furnace combustion test. The furnace is 14 years old. The average life of the furnace is 15 years old. The furnace is running at this time. Found a worn igniter in the furnace. Went over with the customer that it is nearing its life expectancy. The customer is interested in a second opinnion with my supervisor to get repair vs replacement options. Office to call to schedule an appointment.