Navien America prides itself on manufacturing the most cost-efficient water heaters available. Navien’s built-in hot water recirculation system recirculates hot water that would otherwise be lost, thus, creating a method that lowers the cost of the customer's water bills each month. A tankless Navien can achieve 4.6 gallons per minutes; enough to satisfy two running showers and a kitchen sink. Innovations like these significantly differentiate Navien from its main competitor Rinnai.
Navien tankless water heaters are 98 percent efficient compared to the Rinnai’s 82 percent. To put this into perspective the Rinnai produces 82 cents worth of heat for every dollar spent while the Navien produces 98 cents. This coupled with Navien longer life span and 15 year warranty is why LeBlanc Heating prefers the Navien brand.