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  2. Packaged terminal air conditioner - Wikipedia

    en.wikipedia.org/wiki/Packaged_terminal_air...

    A packaged terminal air conditioner (PTAC) is a type of self-contained heating and air conditioning system intended to be mounted through a wall. [1] The first practical semi-portable air conditioning unit invented by engineers at Chrysler Motors. It entered the market in 1935, and was designed to fit under a window like many modern PTACs. [2]

  3. Friedrich Air Conditioning - Wikipedia

    en.wikipedia.org/wiki/Friedrich_Air_Conditioning

    TwinTemp: Built in both "QuietMaster" and Q-Star configurations, these units provided both heating and cooling settings in one unit. They were replaced by the electric heat and heat pump Kühl/Kühl Q models beginning in 2010. Casement: Produced by Friedrich from 1965 to the early 2000s with few changes, these room air conditioners

  4. Heat pump - Wikipedia

    en.wikipedia.org/wiki/Heat_pump

    Saddle-style window mounted heat pump 3D sketch. Window mounted heat pumps run on standard 120v AC outlets and provide heating, cooling, and humidity control. They are more efficient with lower noise levels, condensation management, and a smaller footprint than window mounted air conditioners that just do cooling. [39]

  5. Underfloor heating - Wikipedia

    en.wikipedia.org/wiki/Underfloor_heating

    Heat pumps and chillers powered by: Electricity; Natural gas; Geothermal heat pump; Underfloor heating is particularly suitable when the energy source is a heat pump, because underfloor heating uses lower water temperatures than systems using radiators, which improves the efficiency of the heat pump. [28]

  6. Air source heat pump - Wikipedia

    en.wikipedia.org/wiki/Air_source_heat_pump

    An air source heat pump (ASHP) is a heat pump that can absorb heat from air outside a building and release it inside; it uses the same vapor-compression refrigeration process and much the same equipment as an air conditioner, but in the opposite direction. ASHPs are the most common type of heat pump and, usually being smaller, tend to be used ...

  7. Rheem Manufacturing Company - Wikipedia

    en.wikipedia.org/wiki/Rheem_Manufacturing_Company

    One of the most significant events came in 1956 with the introduction of "Rheemaire" central air conditioning and heating systems for homes. This eventually became one of the company's primary business areas. [12] [16] In 1968 [17] a plant was opened in Bergum (Burgum in Frisian) in the Netherlands. The plant was successful but had to close its ...

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