Arrived on site to perform heating tune up on a 2017 Goodman unit. Client stated no issues. Cycled unit and is operational. Filter was just replaced. Blower assembly and wheel is good slight dust. Motor is good. Secondary motor control is good l. Inducer motor is in range. Igniter is good. Flame sensor was cleaned. Drain lines a hood and drain pump hood and operation. Found no protection on unit and would recommend adding some to protect unit from electrical surges and power outages. Cycled unit but and went over how unit is running and it’s condition. Went over recommend he is aware and did hold of now. Cycled unit and unit is operational upon departure.