A heat pump is arguably the most efficient way of heating up a space such as a room in your home or an office where you work.
Incredibly, even at temperatures that we consider to be cold, there is heat provided, and continualy replenished, by the sun all around us in the air, ground and water. Also, a heat pump is also able to use waste heat sources, such as from cooling equipment and industrial processes.
A heat pumps job is simply to extract this heat. It does this by expending energy (in the form of electricity) to produce more energy (in the form of heat). For instance, a heat pump might need just 100 kWh of power to turn 200 kWh of freely available environmental or waste heat into 300 kWh of heat output.
A heat pump in your home will commonly consist of two main units. Indoors will be the fan unit that pushes out the warm air. Outside will be the condensing unit that extracts the warm air from the immediate environment. This set up is commonly known as a reversible air-to-air heat pump
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