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Understanding Air Source Heat Pumps

Air-source heat pumps are an increasingly popular option for heating and cooling homes. These pumps work by drawing in outside air and extracting the heat from it, which is then used to heat the home. The refrigeration system of a heat pump consists of a compressor and two copper or aluminum coils, one inside and one outside, which have aluminum fins to aid heat transfer . As the outside air is drawn in over a network of tubes filled with refrigerant gas, it warms up and is then compressed, which increases its temperature even further. The heat is then transferred inside the home, where it is distributed through a network of ducts or pipes . However, it is important to note that air-source heat pumps require a backup system to provide heat when outdoor temperatures drop below freezing

Air source heat pumps offer numerous benefits, including energy efficiency, lower electricity bills, and the ability to heat or cool specific rooms or zones within a home . When properly installed, these pumps can deliver up to three times more heat energy than the electrical energy they consume ]. Air source heat pumps also have a higher coefficient of performance (COP) than standard electric resistance heating systems, making them 180% more efficient

. However, there are some potential drawbacks to consider, such as higher installation costs, increased electricity bills, and the need for more maintenance.

When choosing an air-source heat pump, it is important to consider factors such as the initial cost, the type of pump, and the need for a backup heating system. Metrics such as seasonal energy efficiency ratio (SEER) and heating seasonal performance factor (HSPF) can also be useful in selecting the right system. Additionally, the space available for installation and the costs associated with running the pump should also be taken into account. By carefully considering these factors, homeowners can choose an air-source heat pump that meets their specific needs and provides efficient heating and cooling for their homes.


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