I conducted a comprehensive maintenance check on the Rheem system, ensuring all components were functioning optimally. This included inspecting and cleaning the heat exchanger, checking the burners for proper operation, and testing the thermostat and control board. I also examined the condensate drain and ensured it was clear of blockages. Additionally, I verified the air flow and pressure switches were operating correctly and lubricated the blower motor. The system was tested for efficiency and safety, and any minor issues were promptly addressed.