Arrived at the customers house to preform silver club maintenance, was greeted by the customer and was shown where the thermostat and furnace was. Asked customer If she had started running the heat this year and she informed me she had and to her knowledge she said it has been working properly to her knowledge. While preforming maintenance checked all components of heater. Checked blower motor and inducer motor for proper volts, and amps. Also checked and cleaned flame sensor, igniter, proper gas valve operation in both stages. Checked blower wheel, electrical connections, pressure switches, heat exchanger for cracks or holes, checked evaporator to make sure it was clean. Overall system is working properly and no repairs needed at this time. Did talk talk to the customer about the importance of getting a carbon monoxide detector for the home. Also system did not have surge protection installed and recommend getting that protection for the system installed. Also system did not have a