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  2. Packaged terminal air conditioner - Wikipedia

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

    Packaged terminal air conditioner installed in a residential apartment. 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 ...

  3. Refrigerant - Wikipedia

    en.wikipedia.org/wiki/Refrigerant

    Currently used in residential and commercial air-conditioners and heat pumps. R-134a HFC-134a CH 2 FCF 3: 1,1,1,2-Tetrafluoroethane: 3790 1550 Widely used Most used in 2020 for hydronic heat pumps in Europe and the United States in spite of high GWP. [58] Commonly used in automotive air conditioners prior to phase out which began in 2012. R-410A

  4. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    Central, "all-air" air-conditioning systems (or package systems) with a combined outdoor condenser/evaporator unit are often installed in North American residences, offices, and public buildings, but are difficult to retrofit (install in a building that was not designed to receive it) because of the bulky air ducts required. [32] (Minisplit ...

  5. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    The efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER), which is defined by the Air Conditioning, Heating and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [61]

  6. Lowe's - Wikipedia

    en.wikipedia.org/wiki/Lowe's

    Lowe's is the second-largest hardware chain in the United States (previously the largest in the U.S. until surpassed by Home Depot in 1989) behind rival the Home Depot and ahead of Menards. [6] It is also the second-largest hardware chain in the world, also behind the Home Depot, but ahead of European retailers Leroy Merlin , B&Q , and OBI .

  7. Ice storage air conditioning - Wikipedia

    en.wikipedia.org/wiki/Ice_storage_air_conditioning

    Ice storage air conditioning is the process of using ice for thermal energy storage. The process can reduce energy used for cooling during times of peak electrical demand . [ 1 ] Alternative power sources such as solar can also use the technology to store energy for later use. [ 1 ]

  8. Gallon - Wikipedia

    en.wikipedia.org/wiki/Gallon

    A fuel station in the United States displaying fuel prices per US gallon The US liquid gallon (frequently called simply "gallon") is legally defined as 231 cubic inches , which is exactly 3.785411784 litres.

  9. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    All new gas storage tank water heaters with capacities smaller than 55 US gal (210 L; 46 imp gal) sold in the United States in 2015 or later shall have an energy factor of at least 60% (for 50-US-gallon units, higher for smaller units), increased from the pre-2015 minimum standard of 58% energy factor for 50-US-gallon gas units. Electric ...

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