Arrived on site to perform spring tune up on Goodman 2017 unit. Condenser located in back yard. Furnace located in attic. Tenant Staters no issues. Washed condenser coil inside and out. Primary starter is good. Secondary motor control is good and in range. Fan motor is good and amps are in range. Checked start up amps on compressor and are good and run amps as well. Checked refrigerant pressures and unit is holding charge and cooling hole at 20 degrees. No protection on unit and recommended adding some. Found filter dirty and replaced. Tenant paid for filter. Blower wheel is good. All safety switches are operational. Drain lines are dirty but still draining. Advised no protection on unit and recommended protection to protect systems from electrical surges and power outages that can damage or even short out systems and components. Called owner and she is aware of how unit is running and recommendations. Client did want to go for with adding protection on both units. Installed surge pro