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  2. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    The first mini-split system was sold in 1961 by Toshiba in Japan, and the first wall-mounted mini-split air conditioner was sold in 1968 in Japan by Mitsubishi Electric, where small home sizes motivated their development. The Mitsubishi model was the first air conditioner with a cross-flow fan.

  3. Glossary of HVAC terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_HVAC_terms

    A two-stage air conditioner is designed to operate on high and low settings during different weather conditions and seasons. The high setting is used during extreme weather, and the low setting is used during moderate weather. This type of air conditioner produces a balanced temperature and is in use for a longer period of time.

  4. Attic fan - Wikipedia

    en.wikipedia.org/wiki/Attic_fan

    An attic fan installed underneath a roof. A powered attic ventilator, or attic fan, is a ventilation fan that regulates the heat level of a building's attic by exhausting hot air. A thermostat is used to automatically turn the fan off and on, while sometimes a manual switch is used. An attic fan can be gable mounted or roof mounted. Additional ...

  5. We Did the Research and *These* Are the Best Air Conditioner ...

    www.aol.com/did-research-best-air-conditioner...

    Mounted Window Air Conditioner. Overall, LG's window A/C is a top choice for anyone looking to cool a space of up to 350 square feet. This one comes with a remote so you won’t have to get up ...

  6. 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 ...

  7. MRTC 3000 class - Wikipedia

    en.wikipedia.org/wiki/MRTC_3000_class

    Each light rail vehicle has three roof-mounted air-conditioning units manufactured by Thermo King. In total, there are nine air-conditioning units in a three-car train set. LRV 044 used to have experimental exterior lights above the doors in 2017. However, the lights were removed when Sumitomo refurbished and renumbered LRV 044 as 3044 in 2021.

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