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Installing a new air source heat pump costs more than £10,000 on average, with a ground source heat pump costing more than that. ... of running a gas boiler above the cost of running an electric ...
AFUE = furnace efficiency ≈ 95% for a modern condensing furnace; COP = heat pump coefficient of performance ≈ 3.2 seasonally adjusted for northern US heat pump; EI = emissions intensity of electricity ≈ 200–800 ton(CO 2)/GWh, depending on the region's mix of electric power plants (Coal vs Natural Gas vs Nuclear, Hydro, Wind & Solar)
This historic heat pump heated the town hall for 63 years until 2001. Only then was it replaced by a new, more efficient heat pump. [14] 1945 John Sumner, City Electrical Engineer for Norwich, installs an experimental water-source heat pump fed central heating system, using a nearby river to heat new Council administrative buildings. It had a ...
The heat pump itself can be improved by increasing the size of the internal heat exchangers, which in turn increases the efficiency (and the cost) relative to the power of the compressor, and also by reducing the system's internal temperature gap over the compressor. Obviously, this latter measure makes some heat pumps unsuitable to produce ...
That heat has to come from somewhere, and many water heaters/boilers are old and energy inefficient. According to the U.S. DOE, water heating may account for as much as 20% of home energy use .
But a house with good levels of insulation, using a heat pump and an electric car will use less than half that level of energy imports (45%), at around 7.5 MWh a year, from gas used in electricity ...
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