Rinnai tankless water heaters save water. Up to 8,700 bottles of water per year per person can be wasted waiting for hot water. Rinnai offers tankless water heaters with built-in recirculation pumps resulting in less wasted water down the drain. Rinnai Smart-Circ™ Intelligent Recirculation™ technology "learns" your hot water usage over a seven-day period, then schedules pump and tankless recirculation accordingly. This results in less wasted water down the drain, saving energy and money. #hvac |

The REHP·Series™ is a ground-breaking water heater. It works by extracting the heat from the surrounding air and transferring it to the water. Even if the air seems cool, it still contains some heat energy. The unit uses a small amount of electrical energy to power internal components including a fan and compressor; and then acts as an energy multiplier. For example, the Rinnai REHP·Series™ 80 GL unit has a UEF rating of 4.0. This means it converts every 1 kW of electrical energy in to 4.0kW of