Heat up your water efficiently and cleanly with the Reliance 6 40 EORS 40-Gallon Electric Medium Water Heater. This product is environmentally friendly and uses non-CFC foam insulation. The Reliance electric water heater features a factory-installed temperature and pressure relief valve and PEX polymer-lined heat trap nipples. It also comes with dual-copper-sheathed heating elements rated at 4500 watts each. The nominal capacity of this unit is 40 gallons of water.Reliance Electric 4500 Watts Water Heater for Medium Room, 40 Gallon Capacity Nominal capacity of 40 gallons Rated storage volume of 37 gallons Uniform Energy Factor (UEF) of 0.92 Designed for average demand applications Maximum wattage of 6,000 watts Electric medium height design Foam insulation for improved energy efficiency Assembled product dimensions: 26.25″L x 23.13″W x 53.50″H Self-cleaning feature for maintenance ease Limited warranty for tank and parts: 6 years Limited warranty for labor: 1 year