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2. Absorption-compression heat pump - Wikipedia

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

   The main difference between the two is in the compression phase: where the compression heat pump uses an electric compressor, the gas-driven absorption heat pump uses a thermal compressor. [12] The ACHP is obtained by combining the components that are in common and using the electric and thermal compressor in parallel or in series.

3. Ground source heat pump - Wikipedia

   en.wikipedia.org/wiki/Ground_source_heat_pump

   A heat pump in combination with heat and cold storage. A ground source heat pump (also geothermal heat pump) is a heating/cooling system for buildings that use a type of heat pump to transfer heat to or from the ground, taking advantage of the relative constancy of temperatures of the earth through the seasons.

4. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   In general, heat pumps work most efficiently (that is, the heat output produced for a given energy input) when the difference between the heat source and the heat sink is small. When using a heat pump for space or water heating, therefore, the heat pump will be most efficient in mild conditions, and decline in efficiency on very cold days.

5. How do heat pumps work? What to know about installation ... - AOL

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

   For ductless heat pumps, the most popular in Minneapolis, it's $6,000 to $7,000 per house zone, while forced air heat pumps cost between $10,000 to $20,000, depending on the model. A traditional ...

6. Air source heat pump - Wikipedia

   en.wikipedia.org/wiki/Air_source_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.

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

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

   According to Adams, since the manufacturing and installation process for ACs and heat pumps are almost the same, upgrading from an AC to a heat pump of the same model would only cost an extra $300 ...