The Rheem Performance Line. Exclusive to the Home Depot! This water heater provides instant and continuous hot water for 1 sink faucet. Tankless Electric Point-of-Use Water Heaters help reduce energy usage, save on energy costs, and are small so they will be a perfect match for installations under a cabinet or sink in your home, office, boat or RV. Plus, it's a great value with a 5-year heat exchanger and 1-year parts limited warranty. Incoming water temperatures, hot water demand and size of the tankless unit installed are all factors in meeting your hot water needs. If your requirements exceed a single faucet, it's recommended that you consider a Rheem 18, 27, or 36 kW unit. Requires 1 x 30 AMP double pole breaker with 10 gauge wire (professional installation recommended).