Came out to perform preventative maintenance on furnace. Let family member know that I was here to complete the maintenance. Inspected the filters, blower assembly, motor, capacitor, electrical components, heat exchanger, evaporator coil, burners, flame sensor, ignitor, gas valve, inducer motor and overall condition of equipment. Cleaned flame sensor and dust off the burners and components. Blower wheel needs cleaning. Dust is building on it and will eventually start to affect the air flow and blower components as well. Checked thermostat operation, wiring, amps, temperatures and gas pressure. Though system is operating within manufacturing specs at this time, I do recommend blower cleaning still.