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Continued growth was followed by the acquisition by Robert Bosch GmbH in 1992, with the company changing its name to 'Worcester, Bosch Group'. As part of Bosch's heating technology subsidiary, Worcester is a brand of Bosch Thermotechnology Ltd, the collective name that refers to Worcester, Bosch Group and Buderus (acquired by Bosch in 2003). [5]
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 ...
Condensing boilers are water heaters typically used for heating systems that are fueled by gas or oil. When operated in the correct circumstances, a heating system can achieve high efficiency (greater than 90% on the higher heating value ) by condensing water vapour found in the exhaust gases in a heat exchanger to preheat the circulating water.
Much larger than tankless heaters, cold water is heated by a gas flame or an electric heating coil, both located at the base of the tank. Storage tank water heaters are expected to last about 10 ...
Their small-diameter water-tubes curve outwards on each side to form a cylindrical furnace. As there is no grate or ashpan beneath, firing must be by oil. Return circulation is by external downcomers. Early versions also used water-walls at each end of the furnace, later ones had plain firebrick walls. [4]
Gas tankless water heaters shall have an energy factor of 82% or greater under the 2015 standards, which corresponds to the pre-2015 Energy Star standard. In 2022 the Department of Energy proposed rules that would take effect in 2026 and would effectively eliminate inefficient non-condensing gas water heaters in commercial buildings.
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