Enjoy A Continuous, Abundant and Endless Supply of Hot Water! Save an average of 26% or more on your water-heating bill, every month! Eliminate the tank heater and save valuable space in your home. Stop paying for hot water when you don't need it! Built-in leak detection & alarm. Rust & corrosion free. Advanced microprocessor control! A Seisco tankless water heater is a very small but very powerful and extremely efficient electric water heating system. The Seisco tankless water heater, whose technology has earned 5 U.S. Patents and many more foreign patents, is much more than just a water heater. The tankless water heater was measured to be over 99% efficient by an agency of the Federal government. Why is the Seisco Tankless Water Heater Superior to  All Other Electric Tankless Water Heaters? First, ours is the only electric tankless water heater which enjoys a patented power sharing distribution method for activating the heating elements. This method allows each one of the multiple heating elements to simultaneously provide substantial amounts of heat to the fluid as it flows through the heat exchanger. Other systems activate the elements individually to full power one after another, which creates hot spots in the heating chamber particularly at shutdown. these hot spots literally boil the minerals out of the water, creating excessive mineral buildup and discharge. This sequential activation used by other heaters also loads (works) certain heating elements more than others resulting in early failures. Second, our tankless water heater is the only one that controls power elements in a very unique and patented power-modulating pattern. This feature insures that the use of our tankless water heater does not inherently create disturbance (flicker) in the lighting circuits. Without our tankless water heater's patented control, one can experience lights that flicker in the same fashion as if you were at your thermostat rapidly flipping the air conditioner or electric heating off and on. It should be remembered in any application, the electrical service to the building should be properly sized to accommodate the addition of all major electrical appliances, including the tankless water heater. Comparison of Estimated Annual Water Heating Costs:   Seisco RA-28 Electric S/T Natural Gas S/T LPG S/T Capacity N/A 50 gallon 50 gal., 75 gal. 50 gallon Daily Usage 64 gallons 64 gallons 64 gal., 64 gal. 64 gallons Annual Cost of Hot Water Usage (US) $270.00 $380.00 $387.00, $452.00 $563.00 A.H.C.* -0- -0- $100.00, $100.00 $100.00 Total Operating Cost: $270.00 $380.00 $487.00, $552.00 $663.00 NOTE: Estimated Costs are Based on Normal Usage (US): Operating cost will vary based on many factors  including the local cost for electricity or gas, the Tankless Water Heater Installation location and size of the  storage tank heater, and total hot water use. *A.H.C. refers to additional heating and cooling costs  associated with the stack or vent loss of conditioned air.