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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. Electric heating - Wikipedia

    en.wikipedia.org/wiki/Electric_heating

    For domestic hot water supply, or industrial process hot water, permanently installed heating elements in an insulated hot water tank may be used, controlled by a thermostat to regulate temperature. Household units may be rated only a few kilowatts. Industrial water heaters may reach 2000 kilowatts.

  4. Electric boiler - Wikipedia

    en.wikipedia.org/wiki/Electric_boiler

    Normally resistance heating elements are insulated from the water going through the boiler; sensitive ground fault leakage current detection may be installed to alarm or shut off power if an insulation failure is detected. Electrode boilers put the water supply in direct contact with the electrical supply; current collectors or other features ...

  5. Storage water heater - Wikipedia

    en.wikipedia.org/wiki/Storage_water_heater

    A two-element electric water heater has one element at the top of the storage tank, and one element at the bottom. Each element is controlled by an independent thermostat . The lower element provides recovery from standby losses, and the upper element provides extra heating when a lot of hot water is being used.

  6. Electric Water Heaters Are Better at Storing Energy Than a ...

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  7. 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 ...

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