A recent study by the American Council for an Energy-Efficient Economy examined 16 water heater technologies and types.

With the variety of water heaters on the market today, consumers have many choices to increase the energy-efficiency of their homes. A recent study by the American Council for an Energy-Efficient Economy examined 16 water heater technologies and types, including heat pump water heaters, high-efficiency gas water heaters and tankless water heaters. The study found that these technologies can save 2.3 quadrillion Btu through 2025, or about 5% of projected demand in residential and commercial buildings in 2025. Click the above link to download a free copy of the report.

Consumer Reports Thinks So, Too

Those same technologies were also tested by Consumer Reports. Heat pump and solar models have “great potential” for energy savings.