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2. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   An 80 US gal (300 L; 67 imp gal) electric storage tank water heater was able to have a minimum energy factor of 86% under the pre-2015 standard, while under the 2015 standard, the minimum energy factor for an 80-gallon electric storage tank water heater is now 197%, which is only possible with heat pump technology. This rating measures ...

3. Bradford White - Wikipedia

   en.wikipedia.org/wiki/Bradford_White

   The company manufacturers a full-line of natural gas and electric water heaters, including high efficiency heat pump models), and propane models. Their portfolio includes high-efficiency and Energy Star models. The company also offers a line of tankless water heaters.

4. Electric boiler - Wikipedia

   en.wikipedia.org/wiki/Electric_boiler

   These classifications are determined based on the boiler's power output, energy performance, model type, energy consumption, and energy efficiency. [2] In a residential setting, an electric boiler is often used as a backup to a house's heating system. During the colder months, heating and hot water is used more frequently.

5. US plans water heater standards, says they will save ... - AOL

   www.aol.com/news/us-plans-water-heater-standards...

   The U.S. Department of Energy on Friday proposed energy efficiency standards on water heaters it said would save consumers $11.4 billion on energy and water bills annually. The standards on ...

6. Tankless water heating - Wikipedia

   en.wikipedia.org/wiki/Tankless_water_heating

   A hybrid water heater is a water heating system that integrates technology traits from both the tank-type water heaters and the tankless water heaters. [5] It maintains water pressure and consistent supply of hot water across multiple hot water applications, and like its tankless cousins, it is efficient and can supply a continuous flow of hot ...

7. Energy factor - Wikipedia

   en.wikipedia.org/wiki/Energy_factor

   The energy factor metric only applies to residential water heaters, which are currently defined by fuel, type, and input capacity. [5] Generally, the EF number represents the thermal efficiency of the water heater as a percentage, since it is an average of the ratio of the theoretical heat required to raise the temperature of water drawn to the amount of energy actually consumed by the water ...