Lochinvar recently announced the launch of its XCalibur Condensing High Efficiency Tankless Water Heaters with X3 Scale Prevention Technology.Bringing to market new premium features, including an ...

High-efficiency water heaters typically cost more than old-fashioned tank heaters, and installation costs can also be high if you’re switching to an entirely new type of water heater.

It manufactures tankless, hybrid, solar, and high-efficiency tank water heaters. GE General Electric makes gas and electric water heaters.

Our Top Picks: Series 200 Tankless Water Heater for $701.53; T-H3M-DV-N High-Efficiency Tankless Water Heater for $839.18; or T-H3-DV-N Natural Gas Tankless Water Heater for $1,247.95. Advertisement ...

But high-efficiency water heating technology exists in the form of heat pump water heaters. These heat pump water heaters don’t waste time burning gas to heat water.

High-efficiency water heaters typically cost more than old-fashioned tank heaters, and installation costs can also be high if you’re switching to an entirely new type of water heater.

Look for a high-efficiency water heater with a “coefficient of performance” of 3.0 or higher. Make sure your water heater and other water-using appliances are Energy Star certified.

The U.S. Department of Energy reports a tankless water heater is 24% to 34% more energy-efficient than storage tank water heaters—as long as you use around 41 gallons per day.

Question: I changed over from a gas water heater to electric some years ago. It was done at the time that I replaced my gas furnace with a high efficiency unit.