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2. Sustainable refurbishment - Wikipedia

   en.wikipedia.org/wiki/Sustainable_refurbishment

   Sustainable refurbishment describes working on existing buildings to improve their environmental performance using sustainable methods and materials. A refurbishment or retrofit is defined as: "any work to a building over and above maintenance to change its capacity, function or performance' in other words, any intervention to adjust, reuse, or upgrade a building to suit new conditions or ...

3. Direct exchange geothermal heat pump - Wikipedia

   en.wikipedia.org/wiki/Direct_exchange_geothermal...

   DX system being drilled in the 1980s. A direct exchange (DX) geothermal heat pump is a type of ground source heat pump in which refrigerant circulates through copper tubing placed in the ground unlike other ground source heat pumps where refrigerant is restricted to the heat pump itself with a secondary loop in the ground filled with a mixture of water and anti-freeze.

4. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   Specifically, the heat pump transfers thermal energy using a heat pump and refrigeration cycle, cooling the cool space and warming the warm space. [1] In winter a heat pump can move heat from the cool outdoors to warm a house; the pump may also be designed to move heat from the house to the warmer outdoors in summer.

5. How much more will it cost to heat your home this winter? - AOL

   www.aol.com/much-more-cost-heat-home-222057750.html

   Heating costs for natural gas are up just over 3%, for an average cost of $634 for the winter period, compared with $615 for 2023-2024. Costs are expected to rise only modestly in line with ...

6. Zero carbon housing - Wikipedia

   en.wikipedia.org/wiki/Zero_carbon_housing

   Heat pumps — powered by electricity, deliver high efficiency by drawing on the heat energy in ambient air/ground, heat pumps can deliver an apparent effiency of 400% or more, i.e. heat delivered is 4x the electrical energy in. May use air, water or ground as the heat source, and can deliver heat as warm air (air to air heat pump) or via a wet ...

7. 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.