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2. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   An air source heat pump (ASHP) is a heat pump that can absorb heat from air outside a building and release it inside; it uses the same vapor-compression refrigeration process and much the same equipment as an air conditioner, but in the opposite direction. ASHPs are the most common type of heat pump and, usually being smaller, tend to be used ...

3. Air source heat pump - Wikipedia

   en.wikipedia.org/wiki/Air_source_heat_pump

   An air source heat pump (ASHP) is a heat pump that can absorb heat from air outside a building and release it inside; it uses the same vapor-compression refrigeration process and much the same equipment as an air conditioner, but in the opposite direction. ASHPs are the most common type of heat pump and, usually being smaller, tend to be used ...

4. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   Electrical heaters are often used as backup or supplemental heat for heat pump systems. The heat pump gained popularity in the 1950s in Japan and the United States. [14] Heat pumps can extract heat from various sources, such as environmental air, exhaust air from a building, or from the ground. Heat pumps transfer heat from outside the ...

5. Fact check: Heat pumps move heat energy from outside to ... - AOL

   www.aol.com/fact-check-heat-pumps-move-152100263...

   For every unit of energy consumed, heat pumps can release several times that amount in heat in a home. This is not always three times the electric input; it can be more or less depending on a ...

6. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   This is partly because ice forms on the outdoor unit's heat exchanger coil, which blocks air flow over the coil. To compensate for this, the heat pump system must temporarily switch back into the regular air conditioning mode to switch the outdoor evaporator coil back to the condenser coil, to heat up and defrost. Therefore, some heat pump ...

7. Builder Redrow to replace gas boilers with heat pumps in new ...

   www.aol.com/builder-redrow-replace-gas-boilers...

   Heat pumps use air and a small amount of electricity to produce heat and are more environmentally friendly than a gas-powered boiler when installed in an energy-efficient and well-insulated home.