Tankless hot water heaters provide on-demand hot water without the need to continually store and heat water 24 hours a day. Aaron Siegel from Eemax joins Steve Easley at the EnergyWise House to explain how the company’s products supply hot water for applications ranging from hand washing to drench showers, with a sophisticated thermostatic control to ensure precise outlet temperature. Whole-house units are activated by water flow and demand to draw only the energy required to meet hot water demand.