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  2. Winter Heating: How To Choose the Best System for Your Home ...

    www.aol.com/winter-heating-choose-best-system...

    With the federal government still offering incentives for energy efficient home improvements, including home heating systems, it might make sense to upgrade your home heating system as winter ...

  3. Mike Thomas: Several ways to reduce heating costs - AOL

    www.aol.com/mike-thomas-several-ways-reduce...

    Install energy-efficient products – Upgrading to energy-efficient appliances and products such as new HVAC systems, high-performance windows and ENERGY-STAR rated appliances will also help lower ...

  4. Little-known but efficient, a different way to heat and cool ...

    www.aol.com/news/little-known-efficient...

    A 5-ton heat pump installed in a 2,000 square foot home, for example, would get $8,000 back from the utility. People who live in places with cold winters and hot summers reap the biggest savings.

  5. Energy conversion efficiency - Wikipedia

    en.wikipedia.org/wiki/Energy_conversion_efficiency

    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 where the heat is required. Most air conditioners have a COP of 2.3 to 3.5. [4] When talking about the efficiency of heat engines and power stations ...

  6. Ground source heat pump - Wikipedia

    en.wikipedia.org/wiki/Ground_source_heat_pump

    Ground source heat pumps are recognized as one of the most efficient heating and cooling systems on the market. They are often the second-most cost-effective solution in extreme climates (after co-generation), despite reductions in thermal efficiency due to ground temperature. (The ground source is warmer in climates that need strong air ...

  7. Heat pump - Wikipedia

    en.wikipedia.org/wiki/Heat_pump

    In cold weather, a heat pump can move heat from the cool outdoors to warm a house (e.g. winter); the pump may also be designed to move heat from the house to the warmer outdoors in warm weather (e.g. summer). As they transfer heat rather than generating heat, they are more energy-efficient than other ways of heating or cooling a home. [2]

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