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  2. Seasonal energy efficiency ratio - Wikipedia

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

    Air-conditioner sizes are often given as "tons" of cooling, where 1 ton of cooling equals 12,000 BTU/h (3.5 kW). 1 ton of cooling equals the amount of power that needs to be applied continuously over a 24-hour period to melt 1 ton of ice. The annual cost of electric energy consumed by an air conditioner may be calculated as follows:

  3. The Best Window Air Conditioners, According to ... - AOL

    www.aol.com/best-window-air-conditioners...

    Friedrich Chill Premier 10000 BTU Smart Window Air Conditioner CCF10A10A. Best for: Large rooms This model can cool a 400- to 500-square-foot space with ease thanks to its 10,000 BTUs and eight ...

  4. Coefficient of performance - Wikipedia

    en.wikipedia.org/wiki/Coefficient_of_performance

    [1] [2] Higher COPs equate to higher efficiency, lower energy (power) consumption and thus lower operating costs. The COP is used in thermodynamics . The COP usually exceeds 1, especially in heat pumps, because instead of just converting work to heat (which, if 100% efficient, would be a COP of 1), it pumps additional heat from a heat source to ...

  5. Utility frequency - Wikipedia

    en.wikipedia.org/wiki/Utility_frequency

    The waveform of 230 V and 50 Hz compared with 120 V and 60 Hz. The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the nominal frequency of the oscillations of alternating current (AC) in a wide area synchronous grid transmitted from a power station to the end-user.

  6. Your Apartment + These Top-Rated Window A/C Units = True ...

    www.aol.com/apartment-top-rated-window-ac...

    Check out our picks for the best window AC units you can buy. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Sign in. Mail. 24/7 Help. For ...

  7. The 6 best-looking window air conditioners that ... - AOL

    www.aol.com/best-looking-window-air-conditioners...

    The Soleus Air Exclusive air conditioner installs like any other AC, but only takes up 3 inches of window space. This means that the part over the window sill is only 3 inches long, marking a ...

  8. Efficient energy use - Wikipedia

    en.wikipedia.org/wiki/Efficient_energy_use

    For example, an air conditioner uses more energy during the afternoon when it is hot. Therefore, an energy-efficient air conditioner will have a larger impact on peak demand than off-peak demand. An energy-efficient dishwasher, on the other hand, uses more energy during the late evening when people do their dishes.

  9. European Union energy label - Wikipedia

    en.wikipedia.org/wiki/European_Union_energy_label

    For air conditioners, the directive applies only to units under 12 kW. Every label contains the following information: the model, the energy efficiency category from A+++ to G, the annual energy consumption (full load at 500 hours per year) the cooling output at full load in kW; the energy efficiency ratio in cooling mode at full load