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  2. 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]

  3. Heat pump - Wikipedia

    en.wikipedia.org/wiki/Heat_pump

    Air-to-air heat pumps provide hot or cold air directly to rooms, but do not usually provide hot water. Air-to-water heat pumps use radiators or underfloor heating to heat a whole house and are often also used to provide domestic hot water. An ASHP can typically gain 4 kWh thermal energy from 1 kWh electric energy.

  4. Energy in Ohio - Wikipedia

    en.wikipedia.org/wiki/Energy_in_Ohio

    In 2008, the state produced 85 billion cubic feet of natural gas, which nearly 100% of the production stayed in the state, enough to heat 1 million homes. [7] The Rockies Express Pipeline was recently completed, connecting the eastern part of Ohio with natural gas production facilities in Colorado. 1.1 trillion cubic feet of natural gas ...

  5. Ground source heat pump - Wikipedia

    en.wikipedia.org/wiki/Ground_source_heat_pump

    [50] [47] [49] The payback period for larger commercial systems in the US is 1–5 years, even when compared to natural gas. [47] Additionally, because geothermal heat pumps usually have no outdoor compressors or cooling towers, the risk of vandalism is reduced or eliminated, potentially extending a system's lifespan. [51]

  6. Central High School (Columbus, Ohio) - Wikipedia

    en.wikipedia.org/wiki/Central_High_School...

    Central High School, also known as High School of Columbus and High School of Commerce, was a four-year secondary school (grades 9–12) located in Franklinton, Columbus, Ohio.

  7. Seasonal energy efficiency ratio - Wikipedia

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

    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-Source Heat Pump Equipment. [1]

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