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2. Air source heat pump - Wikipedia

   en.wikipedia.org/wiki/Air_source_heat_pump

   Although higher cost heat pumps can be more efficient a 2024 study concluded that for the UK "from an energy system perspective, it is overall cost-optimal to design heat pumps with nominal COP in the range of 2.8–3.2, which typically has a specific cost lower than 650 £/kWth, and simultaneously to invest in increased capacities of renewable ...

3. List of U.S. states by median home price - Wikipedia

   en.wikipedia.org/wiki/List_of_U.S._states_by...

   Home prices by county (2021) <$100,000 $200,000 $300,000 $400,000 $500,000 $600,000 $700,000+ Cost of housing by State. This article contains a list of U.S. states and the District of Columbia by median home price, according to data from Zillow.

4. 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 ...

5. 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.

6. Low-energy house - Wikipedia

   en.wikipedia.org/wiki/Low-energy_house

   A low-energy house is a guideline rarely specified in actual values (heat load or space-heating minimum). 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 ...

7. PACE financing - Wikipedia

   en.wikipedia.org/wiki/PACE_financing

   PACE financing (property assessed clean energy financing) is a means used in the United States of America of financing energy efficiency upgrades, disaster resiliency improvements, water conservation measures, or renewable energy installations in existing or new construction of residential, commercial, and industrial property owners.