Tankless gas water heaters use natural gas to heat water ... The maximum flow rate is 6.6 GPM, and it is Energy star rated as it does not overconsume energy during operation.

For the average family of four, you can't go wrong with the Rinnai Condensing Tankless Water Heater. This natural gas model ... a year to operate. It's Energy Star-certified, and you'll have ...

We’ve chosen the Rinnai RU199iN Tankless ... water heaters will typically cost more in energy bills, so there is some tradeoff over time. With this in mind, the list includes natural gas ...

Uniform Energy Factor refers to a water heater's efficiency when run under simulated heavy use conditions for a 24-hour period. Gas Tankless is part of the Water Heaters test program at Consumer ...