Electric steam boilers (also known as electric steam generators) are devices that use an electrical outlet to produce hot or warm water. Theyre designed to look similar to conventional steam boiler models, but theyre much more effective. Because theyre not reliant on combustion, they can operate more efficiently and use far less energy than traditional steam boilers. Thats why many homeowners and business owners are turning to them as a cheaper and cleaner alternative for heat transfer applications.