Arrived on site to perform convoy tune up on a 2019 Lennox unit. Clustered no issues condenser in back yard and furnace drain in hall closets. Cycled both heating and cooling and good. Cycled heat we on and was good. Inducer note was good. Replaced filter client supplied. Blower assembly and motor are good. Motor was in range and amps. Drain lines was good. All safety switches are operational. Unit heating up home good and operational. No protection on unit. Recommend adding surge protectors to system. Cycled Ac and was good and cooling. Clean out side coil inside and out. Checked electrical compartment and components. Primary and secondary motor controls are both good. Fan motor is good and in range. Conor start up and run amps are both good and in range. Pressure are good and stable and cooling hole at 20 degrees. No protection on either r unit and recommended adding surge protectors on unit to protect from electrical surge and power outages that can damage or even short out systems