TITAN Electronic Tankless Water Heater has been around for over 35 years and is ideal for a wide range of applications. These models could be used anywhere from point of use to whole entire house (all depending on ground water temperature going into the unit). They are energy efficient and therefore you will be saving on energy cost. The electrical specifications are based on 220-Volt /240-Volts. Be sure to check specifications on unit being purchased. Voltage, amperage, breaker and wire may vary depending on local electrical standards. Consult a professional plumber and electrician for guidance. Remember, that any adjustments made on your unit will take seconds to reach point of use. Water temperature from 105°F to 120°F is adequate for all practical purposes.