Best Overall Tankless Water Heater

Rinnai Condensing Tankless Water Heater

For the average family of four, you can’t go wrong with the Rinnai Condensing Tankless Water Heater. This natural gas model is our pick for the overall best tankless water heater because it can heat up to seven gallons per minute of water.

However, running it around four gallons per minute will cost you only about $130 a year to operate. It’s Energy Star-certified, and you’ll have enough water to run the dishwasher and two showers simultaneously. If you have higher water needs, there are models under the same line capable of up to 11 gallons per minute.

Pros

Costs little to run15-year warrantyWi-Fi compatibleEnergy Star-certified

Cons

Some buyers say the fan is loud

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