The Rinnai RX199iN is an extremely versatile tankless water heater. It features a Versa Vent, so the model can ... captures and recycles heat from the exhaust to increase a model's EF rating.

We’ve chosen the Rinnai RU199iN Tankless Water Heater as our best overall pick for its versatility, efficiency, and sparkling reputation with pro installers. Keep reading for the rest of our ...