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  2. Mass Save needs fixing, official says. Where they're turning ...

    www.aol.com/mass-save-needs-fixing-official...

    While the goal of Mass Save as an energy efficiency program provider is to reduce energy use, many of these companies profit from energy consumption. ... Air-source heat pumps seen as promising ...

  3. Energy Star - Wikipedia

    en.wikipedia.org/wiki/Energy_Star

    Energy Star qualified heat pumps, boilers, air conditioning systems, and furnaces are available. In addition, cooling and heating bills can be significantly lowered with air sealing and duct sealing. Air sealing reduces the outdoor air that penetrates a building, and duct sealing prevents attic or basement air from entering ducts and lessening ...

  4. Low-energy house - Wikipedia

    en.wikipedia.org/wiki/Low-energy_house

    A passive house is a standard, with specific recommendations to save heating energy. At one end of the spectrum are buildings with an ultra-low space-heating requirement which require low levels of imported energy (even in winter), approaching an autonomous building .

  5. Absorption-compression heat pump - Wikipedia

    en.wikipedia.org/wiki/Absorption-compression...

    P-T Diagram showing the temperature gliding in binary heat pump. This behaviour increase the efficiency of ACHP Ammonia toxicity is the main drawback of ACHP. The main advantage with respect to compression heat pump is that the compression-absorption heat pumps allow the heat to be transfer with a temperature glide.

  6. Seasonal thermal energy storage - Wikipedia

    en.wikipedia.org/wiki/Seasonal_thermal_energy...

    A ground source heat pump is used in winter to extract the warmth from the Thermal Bank to provide space heating via underfloor heating. A high Coefficient of performance is obtained because the heat pump starts with a warm temperature of 25 °C (77 °F) from the thermal store, instead of a cold temperature of 10 °C (50 °F) from the ground. [17]

  7. Fossil fuels targeted: Massachusetts well behind its heat ...

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