Does Rinnai manufacture electric tankless water heaters?

We don’t make an electric model, because there are several potential drawbacks to electric tankless water heater units. First, the power requirements of electric units large enough to provide hot water for a typical household can be prohibitive. For example, a unit that can provide three gallons per minute with an 80° F temperature rise would require about a 150 amp 230 VAC circuit. That’s about eight times the power required for a three-ton central air conditioning system!

Second, the relative operating cost of electric tankless water heaters is much higher than gas water heaters. Based on national averages, electricity costs nearly twice as much per BTU as natural gas. Even with propane, gas tankless water heaters are considerably less expensive to operate than those that run on electricity.

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