To maximize fuel efficiency with a Rheem wall-mounted water heater, ensure regular maintenance, set the temperature to 120°F, install low-flow fixtures, and schedule annual professional inspections. Maintain the unit in a well-ventilated area, avoid overloading the tank, and use the correct fuel type as specified. Regularly flush the tank to remove sediment and inspect the anode rod to prevent inefficiencies.

Proper maintenance and usage directly enhance fuel efficiency by optimizing combustion and reducing energy waste. A Rheem study indicates that maintaining the anode rod and flushing the tank annually can improve efficiency by up to 15%, saving 300–500 gallons of water and $50–$100 annually. Setting the temperature to 120°F instead of higher levels reduces energy consumption by 4–6%, as recommended by the U.S. Environmental Protection Agency (EPA). Installing low-flow fixtures can cut hot water usage by 30%, indirectly lowering fuel costs. Rheem’s 90% thermal efficiency rating under ideal conditions highlights the importance of correct installation and venting to prevent heat loss. The EPA estimates that proper water heater maintenance can reduce carbon emissions by 5–10% per year. Combining these practices ensures the Rheem unit operates at peak performance, aligning with energy-saving standards and long-term cost savings.