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    33.94-0.66 (-1.91%)

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    • Open 34.20
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    • Mkt. Cap 726.37M
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  2. How do heat pumps work? What to know about installation ... - AOL

    www.aol.com/news/heat-pumps-know-installation...

    A heat pump provides cool air in the summer and heat in winter. In cooling mode, a heat pump works like a refrigerator, using a refrigerant to cool hot air pulled from outdoors.

  3. Heat pump - Wikipedia

    en.wikipedia.org/wiki/Heat_pump

    A heat pump is a device that uses work to transfer heat from a cool space to a warm space by transferring thermal energy using a refrigeration cycle, cooling the cool space and warming the warm space. [1] In cold weather, a heat pump can move heat from the cool outdoors to warm a house; the pump may also be designed to move heat from the house ...

  4. 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.

  5. Seasonal energy efficiency ratio - Wikipedia

    en.wikipedia.org/wiki/Seasonal_energy_efficiency...

    Seasonal energy efficiency ratio. In the United States, 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, a trade association, in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air ...

  6. Are heat pumps the key to accelerating the energy transition?

    www.aol.com/news/heat-pumps-key-accelerating...

    Improving labeling standards to educate consumers on how much they can save with a heat pump, and helping developing countries build more clean energy infrastructure through aid and technology...

  7. Heating seasonal performance factor - Wikipedia

    en.wikipedia.org/wiki/Heating_seasonal...

    Heating seasonal performance factor. Heating seasonal performance factor (HSPF) is a term used in the heating and cooling industry. HSPF is specifically used to measure the efficiency of air source heat pumps . HSPF is defined as the ratio of heat output (measured in BTUs) over the heating season to electricity used (measured in watt-hours ).

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