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2. Bradford White - Wikipedia

   en.wikipedia.org/wiki/Bradford_White

   The water heaters were patented by Gerald E. White from the years 1933–1938. The company is among the largest American manufacturers of water heaters, competing with companies such as Rheem and A. O. Smith. Bradford White Corporation is made up of Bradford White Water Heaters, Bradford White – Canada, Laars Heating Systems, and Niles Steel ...

3. Rheem Manufacturing Company - Wikipedia

   en.wikipedia.org/wiki/Rheem_Manufacturing_Company

   The company acquired the John Wood Manufacturing Company of California, which produced automatic gas storage water heaters, in 1931. [10] The company expanded overseas to Australia in 1939, building a plant in Sydney to make water heaters. [12] [13] In 1941, the company became the largest manufacturer of automatic water heaters in the United ...

4. 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 ...

5. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   For example, an air-to-water heat pump that produces 6kW at a SCOP of 4.62 will give over 4kW of energy into a heating system for every kilowatt of energy that the heat pump uses itself to operate. When used for space heating, heat pumps are typically more energy-efficient than electric resistance and other heaters.

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. Storage water heater - Wikipedia

   en.wikipedia.org/wiki/Storage_water_heater

   Solar heat is clean and renewable. This is the most modern system. Increasingly, solar powered water heaters are being used. Their solar thermal collectors are installed outside dwellings, typically on the roof or walls or nearby, and the potable hot water storage tank is typically a pre-existing or new conventional water heater, or a water heater specifically designed for solar thermal.