You don't use hot water 24 hours a day, but, you're paying to heat water all day long. With a standard water heater, you heat and reheat the same water...even when you're sleeping. EIB supplied hot water tankless heating systems are a more efficient way to heat water while saving money and recapturing valuable space in your mechanical room, garage, etc. EIB water heaters use the latest in energy technology to heat water on-demand and deliver an endless supply of hot water for as long as you need it. Our systems all offer personalized controls for your convenience, comfort and safety.