Heat pumps are devices that transfer heat from one location to another, providing a cost-effective and efficient way of heating or cooling buildings. Heat pumps use electricity to move heat, either from the air or ground outside, and transfer it into the home to be used as heating. The process is reversed in the summertime when warm air is taken from the inside and released outdoors, cooling the home in the process.
When heating mode, the heat pump absorbs heat from the outside air, ground, or water and transfers it inside the building. This process is reversed in cooling mode, where the heat pump absorbs heat from inside the building and transfers heat energy from it outside.
The refrigerant is first compressed by the compressor, which increases its temperature and pressure. It then flows through the evaporator, which is located outside the building in space heating-only mode and inside the building in cooling mode. As the refrigerant evaporates, it absorbs heat from the surrounding air, ground, or water. The resulting gas is then compressed again by the compressor and flows through the condenser, which is located inside the building in heating mode and outside the building in cooling mode.
As the refrigerant condenses, it releases the heat it absorbed earlier into the air or water inside the building. The cycle then repeats itself, with the refrigerant flowing back to the evaporator to absorb more heat.
Heat pumps are highly efficient because they do not generate heat like traditional heating systems, but rather move heat from one location to another. They are also environmentally friendly, as they do not use fossil fuels and can reduce greenhouse gas emissions.