Indoor legacy tankless hot water heater in good condition. Similar product new is around $800. Taking up space in the garage. First $100 takes it. Features * Endless hot water on demand * Mechanical modulation to keep output temperatures consistent, even if you change the flow at the tap. * Energy efficiency - 80% more efficient than tank type water heaters * A knob controller used to set water temperature rise from 60~100 degree above inlet temperature. * A magnetic safety valve to stop gas flow when the pilot is extinguished. Specifications * Full performance at water pressure of just 12.9 psi. Minimum working pressure of just 2.4 psi. * Natural and LP gas * Indoor Model * High Altitude Models * Direct Vent