Arrived on site to perform heating tune up on a 2020 AcPro unit. Client stated no issues. Furnace located in attic. Client wanted filter replaced. Cycled unit. Found black flex ducting used but okay. Filter was replaced. Blower wheel and assembly is good. Client stated he would order his own filters going forward. Motor is good. Inducer motor is good and in range. All safety switches are operational. Temperature is good and heating home. Drain lines are good and clear at this time. Found not protection on unit and recommended adding protection to protect systems from electrical and power outage that can damage or even short out systems and components. Cycled unit and went over all findings and how unit is running. Client is aware and okay with so at this time. Unit is operational upon departure.