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  2. Waterbed - Wikipedia

    en.wikipedia.org/wiki/Waterbed

    Water beds are normally heated. If no heater is used, the water will equalize with the room air temperature (around 70 °F). In models with no heater, there are at least several inches of insulation above the water chamber. This partially eliminates the body-contouring benefit of a waterbed, and the ability to control the bed temperature.

  3. Own a pool in Southern California? New air-quality rule ...

    www.aol.com/news/own-pool-southern-california...

    Bans on large gas-fired units and pool heaters will begin in 2027, and high-temperature units in 2029. Gas-fired water heaters will be banned from existing buildings once the appliances reach a ...

  4. Patio heater - Wikipedia

    en.wikipedia.org/wiki/Patio_heater

    The chimenea is an alternative to the patio heater for home use, which burns wood instead of gas. Some newer types of patio heaters are electrically powered radiative heaters that emit infrared energy onto nearby surfaces, which in turn heat up the surrounding air. Other styles of outdoor patio heaters include:

  5. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    In traditional plumbing in the UK, the space-heating boiler is set up to heat a separate hot water cylinder or water heater for potable hot water. Such water heaters are often fitted with an auxiliary electrical immersion heater for use if the boiler is out of action for a time. Heat from the space-heating boiler is transferred to the water ...

  6. Bed warmer - Wikipedia

    en.wikipedia.org/wiki/Bed_warmer

    It consisted of a large wooden frame enclosing a bucket of embers, possibly with an iron tray and an iron roof-plate to protect the bed covers from direct heat. [1] [4] Bed warmers were commonly used from the mid-17th to early-20th century. They fell out of fashion with the rise of other methods of warming homes and beds.

  7. Rocket mass heater - Wikipedia

    en.wikipedia.org/wiki/Rocket_mass_heater

    Rocket mass heaters are developed from rocket stoves, a type of wood-burning stove, and masonry heaters. A primary design of a rocket mass heater consists of an insulated combustion chamber where fuel is burned with high efficiency at high temperature, and a large thermal mass in contact with the exhaust gases , which absorbs most of the ...

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