The Rheem XG50S06EC40U1 is a high-performance, 50‑gallon short-height natural gas water heater from Rheem’s Performance Series, engineered for households of 3–5 people. It features a self-powered diagnostic gas control valve that enhances reliability and simplifies servicing. Its 40,000 BTU low‑NOₓ burner delivers strong performance, providing approximately 86 gallons of hot water in the first hour, with a Uniform Energy Factor (UEF) of about 0.64, marking it as an energy-efficient choice. The model boasts a maintenance-free burner system, including an air/fuel shut-off for safety and no filter to clean, paired with a premium-grade anode rod for longevity. Designed for fast installation, it comes with a factory-installed T&P relief valve, standard ¾″ water connections, and a durable brass drain valve. Backed by a 6-year limited warranty on tank and parts, plus 1 year of in-home labor coverage, the XG50S06EC40U1 blends practical design, reliability, and year-round hot water performance. Grab yours now!